Crash Reports 101

  • #1
  • Go to Macintosh HD/Applications/Utilities and open Console.app
  • Run minecraft and when it crashes the java log will be added to the console, which you can then select and copy
  • [/list]

    Linux
    [list]
  • Open a terminal (on distributions such as Ubuntu/Linux Mint, this is done with Ctrl + Alt + T)
  • Run
  • java -Xms512m -Xmx1024m -jar minecraft.jar 

  • Watch the console output. You can select and copy it after making the game crash.
  • [/list]

    Note: Your current directory MUST be wherever the minecraft.jar file is. If you are using linux I am going to assume you know at least basic command line functions.


    MC Patcher

    MC Patcher can be a great tool for obtaining crash reports (personally I don't like it for it's HD patching capabilities because i don't like it's methods but that's just me). Start by downloading mcpatcher from here

    This is what the default interface should look like.



    For this purpose I recommend unticking all boxes before proceeding and DO NOT hit patch. Hitting patch will make MCPatcher run through it's patching routine, problem is this has been known to interfere with the proper running of some mods including Minecraft Forge. Pressing "Test Minecraft" (Red Arrow) will launch minecraft in offline mode. Recreate the crash. The output will be displayed in the "log" tab (Red arrow in the picture below)



    Now the great thing about mcpatcher is that it actually tries to give you the deobscurificated class/method/field names in the crash report. This can be an unbelievable help to the author of the mod if you have found a new bug or incompatibility.


    Bat script

    Windows Only

    I have also developed a bat script to assist in the gathering of crash logs. Unfortunately I found a bug in it. I will correct the bug and upload it at a later date.





    Part 3
    Reading the Crash Report

    Ok so you have successfully retrieved your crash report so now we blindly post it on the last mod's forum page right?



    Wrong

    Doing this could result in the modder (or others) politely telling you the problem, the modder not responding (they may be away or busy) or a very grumpy response (modder may have had a hard day and you are the 10th person posting the exact same report). In any case, most of the time by simply reading and understanding the error report you can solve the problem yourself much quicker and easier then posting and waiting for a response. Sometimes posting is unavoidable (maybe you found a new bug) but it really should be the last resort, not the first.

    Now this section actually has a duel purpose, I am writing this both for users who receive crash reports to at least try and diagnose their problems but also for mod makes or just general good guys who are trying to help others with their crashes.

    A crash report generally contains 2 main elements. Now these don't really have formal names, but I generally refer to them as either the header or the stack trace. Also depending how you got the crash log there may also be other information that has been output that was likely left over mod debugging code, this can generally be ignored (although may be useful for the mod author).

    Please note in this section I may interchange the word error and exception. There are important differences between these but I don't think we really need to get bogged down by that right now.

    Header

    The header generally appears at the top of the crash report, it will generally contain things like your version of minecraft as well as the mods you have installed. Just a quick note on this, if you got your crash report from the forge "crash-reports" directory, the header will appear at the bottom and be set out slightly different. It will generally contain the same information just set out differently.

    Here is an example of a header from someone who posted a crash report on my mod topic that uses Minecraft Forge.

    Minecraft has crashed!
    ----------------------

    Minecraft has stopped running because it encountered a problem; Unexpected error
    This error has been saved to /Users/********/Library/Application Support/minecraft/crash-reports/crash-2012-09-24_10.39.53-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.



    --- BEGIN ERROR REPORT e8848218 --------
    Generated 9/24/12 10:39 AM

    - Minecraft Version: 1.3.2
    - Operating System: Mac OS X (x86_64) version 10.7.4
    - Java Version: 1.6.0_33, Apple Inc.
    - Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Apple Inc.
    - Memory: 496632856 bytes (473 MB) / 534708224 bytes (509 MB) up to 1065025536 bytes (1015 MB)
    - JVM Flags: 3 total; -Xbootclasspath/a:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar -Xms512M -Xmx1024M
    - FML: FML v3.0.196.366 Minecraft Forge 4.1.1.251 4 mods loaded, 4 mods active
    FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    MB_Core [Mine & Blade: Core] ([1.3.2] Mine & Blade - Core - Preview 1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    MB_Armoury [Mine & Blade: Armoury] ([1.3.2] Mine & Blade - Armoury - Preview 1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    - LWJGL: 2.4.2
    - OpenGL: ATI Radeon HD 4670 OpenGL Engine GL version 2.1 ATI-7.18.18, ATI Technologies Inc.
    - Is Modded: Definitely; 'forge,fml'
    - Type: Client
    - Texture Pack: Default
    - Profiler Position: N/A (disabled)

    Now right away from this we can see that this user is using the 1.3.2 version of minecraft, has minecraft forge installed, is using Mac OS X (64 bit) is using java 1.6, has 2 mods other than Minecraft Forge/FML both of which were loaded successfully (in this case they are both 2 parts of the same mod). Furthermore because the author (me) is so awesome and put the version of minecraft required in the zip name, we can tell that he is using a mod that is designed for the minecraft version he is using. So far everything looks great.

    Brotip: If you are super worried about privacy and do not want to post your username, remove that section of the crash report or start it out like I did above.


    The Modloader styled headers are slightly different, However I do not have access to one on hand right now (I only mod with forge) but they also generally show similar information. Crashes may occur without either modloader or forge (jar mods only or bugs in the vanilla game), again these should show the minecraft version/java version/os etc but for obvious reasons will not show loaded mods.

    Stack Trace

    The stacktrace is the main technical part of the crash log.

    Here is an example (in this case it is the other half of the header posted in the above section)


    java.lang.NoClassDefFoundError: paulscode/sound/SoundSystem
    at ayq.a(SoundManager.java:235)
    at net.minecraft.client.Minecraft.a(Minecraft.java:1937)
    at net.minecraft.client.Minecraft.a(Minecraft.java:1885)
    at net.minecraft.client.Minecraft.a(Minecraft.java:1821)
    at apq.e(SourceFile:142)
    at apq.a(SourceFile:116)
    at apn.a(SourceFile:64)
    at apn.d(SourceFile:112)
    at apn.m(SourceFile:100)
    at net.minecraft.client.Minecraft.l(Minecraft.java:1482)
    at net.minecraft.client.Minecraft.J(Minecraft.java:834)
    at net.minecraft.client.Minecraft.run(Minecraft.java:764)
    at java.lang.Thread.run(Thread.java:680)
    Caused by: java.lang.ClassNotFoundException: paulscode.sound.SoundSystem
    at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:125)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    ... 13 more
    Caused by: java.lang.NullPointerException
    at org.objectweb.asm.ClassReader.<init>(Unknown Source)
    at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:27)
    at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:167)
    at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:118)
    ... 15 more
    --- END ERROR REPORT 99c3d4f5 ----------

    Stack traces are always printed from most recent to the least recent step in the trace (kind of like your browser history is ordered from most recently visited sight to the site you viseted a long time ago). The first line will describe the type of error. Take note of this, it can help you diagnose most of the problems. In the example above this is
    java.lang.NoClassDefFoundError: paulscode/sound/SoundSystem


    I will go into more detail about this error in the next section as it can be a common crash.

    Brotip: When dealing with this remember "Google is your friend" googling the 1st part of the error "java.lang.NoClassDefFoundError" can help you diagnose the general cause quite easily. Going to the 4th result (which is the java documentation tells us that this means "Thrown if the Java Virtual Machine or a ClassLoader instance tries to load in the definition of a class (as part of a normal method call or as part of creating a new instance using the new expression) and no definition of the class could be found.". In other words something that minecraft or the mod thinks is there is not actually there. This could be improper installation or a corrupted file, but right away we know quite a bit about the error.


    Under the error name is a whole heap of at (classname).(method).... These can also be quite important to modders as it gives us a way to backtrack through the error to hopefully find the root of it. Again the most recent is at the top and least recent is at the bottom. This can be handy for those even without a background in programing. Sometimes you can find the culprit quite easily by scanning through the trace. For example if you see "mine_and_blade" in any part section, it is a good chance that the Mine & Blade mod is likely the source (In one way or another) of the crash.

    For those who have a bit of programing experience what the above trace tells us is that the method a in ayq class had an error, it was called by the a method in the Minecraft class which was called by the next one down and so forth.


    Now when we see a "Caused by" that means what we have is a "Chained Exception". This is important because it is often the case that one of the fundamental exceptions underlying the last encountered exception is the real culprit that must be appropriately addressed. So in other words, these secondary exceptions may be just as important. I can not tell you when they are and when they are not because it really depends on the particular error report.




    Part 4
    Causes of Common Crashes

    So now we have the crash report and we have a very basic understanding of it, what now?



    So now we have the crash report and we have a very basic understanding of it, what now?

    I thought I would start with a few common crashes that we might encounter. Again, if this can diagnose your problem we have saved you some time (you don't have to wait for a response) and we are allowing modders to continue modding rather than diagnose and solve Evey error.


    java.lang.NoClassDefFoundError: ...

    I wanted to start with the error I have been using in the examples above. Here is the full crash report


    --- BEGIN ERROR REPORT e8848218 --------
    Generated 9/24/12 10:39 AM

    - Minecraft Version: 1.3.2
    - Operating System: Mac OS X (x86_64) version 10.7.4
    - Java Version: 1.6.0_33, Apple Inc.
    - Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Apple Inc.
    - Memory: 496632856 bytes (473 MB) / 534708224 bytes (509 MB) up to 1065025536 bytes (1015 MB)
    - JVM Flags: 3 total; -Xbootclasspath/a:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar -Xms512M -Xmx1024M
    - FML: FML v3.0.196.366 Minecraft Forge 4.1.1.251 4 mods loaded, 4 mods active
    FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    MB_Core [Mine & Blade: Core] ([1.3.2] Mine & Blade - Core - Preview 1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    MB_Armoury [Mine & Blade: Armoury] ([1.3.2] Mine & Blade - Armoury - Preview 1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    - LWJGL: 2.4.2
    - OpenGL: ATI Radeon HD 4670 OpenGL Engine GL version 2.1 ATI-7.18.18, ATI Technologies Inc.
    - Is Modded: Definitely; 'forge,fml'
    - Type: Client
    - Texture Pack: Default
    - Profiler Position: N/A (disabled)

    java.lang.NoClassDefFoundError: paulscode/sound/SoundSystem
    at ayq.a(SoundManager.java:235)
    at net.minecraft.client.Minecraft.a(Minecraft.java:1937)
    at net.minecraft.client.Minecraft.a(Minecraft.java:1885)
    at net.minecraft.client.Minecraft.a(Minecraft.java:1821)
    at apq.e(SourceFile:142)
    at apq.a(SourceFile:116)
    at apn.a(SourceFile:64)
    at apn.d(SourceFile:112)
    at apn.m(SourceFile:100)
    at net.minecraft.client.Minecraft.l(Minecraft.java:1482)
    at net.minecraft.client.Minecraft.J(Minecraft.java:834)
    at net.minecraft.client.Minecraft.run(Minecraft.java:764)
    at java.lang.Thread.run(Thread.java:680)
    Caused by: java.lang.ClassNotFoundException: paulscode.sound.SoundSystem
    at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:125)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    ... 13 more
    Caused by: java.lang.NullPointerException
    at org.objectweb.asm.ClassReader.<init>(Unknown Source)
    at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:27)
    at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:167)
    at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:118)
    ... 15 more
    --- END ERROR REPORT 99c3d4f5 ----------

    A NoClassDefFoundError is thrown whenever a java program can't find a particular class that it thinks should be there. The class will be displayed after the ':' as well as the package/folder it is contained in. In the example above that means that the class that cannot be found is called SoundSystem and it is located in the paulscode/sound package.

    There are 3 main reasons this can occur listed below

    1. You have not installed a required dependency. This is probably the most common cause of this error. Most of the time you can guess the missed dependency by looking at the classname/package. One common one I have encountered is when people forget to install PlayerAPI. In this case the crash will display java.lang.NoClassDefFoundError: PlayerBase. Always go back and make sure you have installed all dependencies for a mod
    2. The next most common reason I have seen for this error is due to a corrupted file. This happens occasionally while downloading mods. Just try and re-download the mod or API and try again.
    3. The mod auther has not packaged a particular class file. This will generally mean that part of name/package will have something to do with the mod. Now this is more rare than the other 2 above because if a modder does make a mistake such as this they will generally address it quite quickly. Also remember that your 1st assumption should be a corrupt download (2 above) so try to re-download the mod 1st.

    Now the error posted above was actually due to a corrupted download of Minecraft Forge. After the user re-downloaded Forge everything worked again.


    java.lang.NullPointerException: ...

    The dreaded null pointer exception. The most common cause of this doosy is due to modder error. It can also be caused by incompatible mods or knock on effects from other errors but generally its because of dodgy code. Null pointer exceptions occur when java tried to access an empty object. Because the object doesn't actually exist, java will have a cry and break down. Mostly this can't be fixed by anyone other than the author of the mod(s) in question.

    The only recommendations I can say for this is to
    1. Try and work out the mod causing the error by looking at the stack trace.
    2. Make sure you don't have mods that are known to be incompatible installed
    3. Check the forum page to see if anyone else has already posted this error, if so there may already be a solution in the works and there is little point in re-posting the same error (maybe just a "I got the same error as x") but there is really no point in posting the exact same error log

    Sorry I don't have an example right now, but these errors can be quite varied. If anyone really wants one I will find one later (or generate one myself) and post it.


    Block ID conflict

    This happens when you install a mod that is trying to use the same block ID as another mod. They can be identified by the first error being java.lang.IllegalArgumentException: Slot xxx, where xxx is a number.

    Here is an example

    5 mods loaded
    Minecraft Forge 3.2.5.120
    FML v2.2.17.117
    Forge Mod Loader version 2.2.17.117 for Minecraft 1.2.5
    mod_MinecraftForge : Initialized (minecraft.jar)
    mod_JammyFurniture : Initialized (1.2.5_Jammy_Furniture_Mod_Client_V3.6.zip)
    Mine & Blade: Battlegear - 2.7.7.1 : Pre-initialized ([1.2.5] Mine & Blade Battlegear - 2.7.7.1.zip)
    mod_UpdateManager : Pre-initialized ([1.2.5] Mine & Blade Battlegear - 2.7.7.1.zip)
    mod_Armor : Pre-initialized (ArmorStand.zip)

    Minecraft has crashed!
    ----------------------
    Minecraft has stopped running because it encountered a problem.


    --- BEGIN ERROR REPORT 96fc7838 --------
    Generated 12/06/12 1:46 AM
    Minecraft: Minecraft 1.2.5
    OS: Windows 7 (amd64) version 6.1
    Java: 1.7.0_04, Oracle Corporation
    VM: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
    LWJGL: 2.4.2
    OpenGL: ATI Radeon HD 5570 version 4.2.11631 Compatibility Profile Context, ATI Technologies Inc.
    java.lang.IllegalArgumentException: Slot 211 is already occupied by JAMMY780.blocks.JAMMY780_BlockSpiderHead@723e9d6c when adding mine_and_blade.heraldry.BlockBanner_Forge@6cd1580c
    at pb.<init>(Block.java:249)
    at pb.<init>(Block.java:281)
    at agy.<init>(BlockContainer.java:13)
    at mine_and_blade.heraldry.BlockBanner.<init>(BlockBanner.java:29)
    at mine_and_blade.heraldry.BlockBanner_Forge.<init>(BlockBanner_Forge.java:9)
    at mine_and_blade.heraldry.HeraldryForgeInitialiser.initlaliseBanner(HeraldryForgeInitialiser.java:16)
    at mod_MineAndBlade.load(mod_MineAndBlade.java:356)
    at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:319)
    at cpw.mods.fml.common.Loader.modInit(Loader.java:262)
    at cpw.mods.fml.common.Loader.initializeMods(Loader.java:591)
    at cpw.mods.fml.client.FMLClientHandler.onLoadComplete(FMLClientHandler.java:229)
    at net.minecraft.client.Minecraft.a(Minecraft.java:426)
    at net.minecraft.client.Minecraft.run(Minecraft.java:735)
    at java.lang.Thread.run(Unknown Source)
    --- END ERROR REPORT 4721735d ----------


    These are generally easy to fix, most mods have some sort of config file (generally in the config directory of the .minecraft folder) that is generated the first time a mod is loaded. A mod can customise the block/item ids used in this file. So your best bet is to find the offending block id and change it in one of the mods and try again. You may have to try a number of times to find free block ids. Also minecraft does have a limited number of block IDs available for vanilla/modloader the limit is 255 (the 1st ~ 150 or so are taken up by normal blocks) while Forge has increased this to a bit over 4000. I believe vanilla will increase this to 4000 but I don't think it is currently implemented.


    Just a note, conflicting Item ids will not cause a crash, but these can be identified by items randomly changing to another item on startup/crafting.

    Brotip 1: A tool such as TMI can be used to help identify free block ids. The TMI side bar interface displays the block id used by whichever block you are overing over.
    Brotip 2: If you can help it, always change the block ID of the most recently installed mod. Blocks in your world will also change.




    Part 5
    Posting Guidelines

    So I have a crash report, done basic diagnostics and I am ready to post, how should I post it?



    Checklist

    I thought I would start with a basic checklist about posting crash reports.

    1. Obtain the crash report
    2. Make sure it is actually a crash report (i.e. has a java stack trace)
    3. Do basic diagnostics yourself (read the thread)
    4. Make sure it is not one of the common crashes seen here
    5. Identify the mod causing the error
    6. Try the mod on a fresh jar with only the required APIs, this will help determine if the problem is caused by an incompatability.
    7. Read the Troubleshooting/FAQ section of the Mod page to make sure it is not a common problem that can be fixed
    8. Read the known bugs on the Mod page to make sure your are not-reposting a known bug
    9. Read the Incompatible mods section to make sure that you are not using incompatible mods
    10. Read the last page or two to make sure someone hasn't recently posted the same report (no point in reposting unless you have more information to add)
    11. Do a quick search on the forum topic using the most recent error (eg java.lang.NoClassDefFoundError: paulscode/sound/SoundSystem) as someone else may have already posted the same error a while ago and it has since been solved.
    12. Post your error using the guidelines below.

    Always remember that posting the error should generally be your last resort. You will generally solve the problem quicker yourself as a modder is not always online to answer questions. You may not get a response for a few days and you can't blame the modder for this. It is therefore in your best interest to at least try and solve it yourself.


    Posting Guidelines

    Now before I start, if a modder has another way they like to describe an error report follow theirs. This is just a suggestion.


    When posting an crash report having as much detail as possible is the key. If you write stuff that's not needed, who cares? But not having enough detail can be very annoying for those trying to help.

    At minimum you want
    1. The crash report (the most important part)
    2. A detailed description of your problem (when did it crash, what were you doing in game etc). Again the more details the better, even if you don't think they are relevant. Better to be safe then missing an important detail.
    3. A list of mods APIs and patches used, sometimes this may not be needed as the might be displayed in the crash log, however sometimes not all are displayed. This includes APIs such as Minecraft Forge & PlayerAPI as well as patches like McPatcher or jarmods like Optifine.
    4. Generally the OS that you use is not needed, java is generally cross platform. Although some mods may not like some OS because of the way certain features are written. Use your best judgement on this (especially considering it may already be in the crash report).
    5. Any other mod specific information that might be required. This one really depends on the mod you are using and will mainly apply to very special cases\
    6. Be Polite, as a modder I am much more likely to be more helpful to someone who has both been polite and actually tried to do a little homework (i.e stuff on this post) then to someone who as not.


    Brotip: Crash logs can be quite long. Always put them in a spoiler as this will tidy up the post a bit. A spoiler can be made like this

    [spoiler]
    Paste crash log here
    [/spoiler]


    If you do do this it might also be a good idea to also write what the crash was somewhere outside of the spoiler so it can be search for by other users easily.


    An example post might look something like this




    Hi <modders name>,

    My minecraft crashed on startup with a java.lang.NoClassDefFoundError: paulscode/sound/SoundSystem.

    I was using no other mods or APIs (other than those required by this mod) at the time. When I installed the APIs I used a fresh jar.

    here is the crash report


    --- BEGIN ERROR REPORT e8848218 --------
    Generated 9/24/12 10:39 AM

    - Minecraft Version: 1.3.2
    - Operating System: Mac OS X (x86_64) version 10.7.4
    - Java Version: 1.6.0_33, Apple Inc.
    - Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Apple Inc.
    - Memory: 496632856 bytes (473 MB) / 534708224 bytes (509 MB) up to 1065025536 bytes (1015 MB)
    - JVM Flags: 3 total; -Xbootclasspath/a:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar -Xms512M -Xmx1024M
    - FML: FML v3.0.196.366 Minecraft Forge 4.1.1.251 4 mods loaded, 4 mods active
    FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    MB_Core [Mine & Blade: Core] ([1.3.2] Mine & Blade - Core - Preview 1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    MB_Armoury [Mine & Blade: Armoury] ([1.3.2] Mine & Blade - Armoury - Preview 1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available
    - LWJGL: 2.4.2
    - OpenGL: ATI Radeon HD 4670 OpenGL Engine GL version 2.1 ATI-7.18.18, ATI Technologies Inc.
    - Is Modded: Definitely; 'forge,fml'
    - Type: Client
    - Texture Pack: Default
    - Profiler Position: N/A (disabled)

    java.lang.NoClassDefFoundError: paulscode/sound/SoundSystem
    at ayq.a(SoundManager.java:235)
    at net.minecraft.client.Minecraft.a(Minecraft.java:1937)
    at net.minecraft.client.Minecraft.a(Minecraft.java:1885)
    at net.minecraft.client.Minecraft.a(Minecraft.java:1821)
    at apq.e(SourceFile:142)
    at apq.a(SourceFile:116)
    at apn.a(SourceFile:64)
    at apn.d(SourceFile:112)
    at apn.m(SourceFile:100)
    at net.minecraft.client.Minecraft.l(Minecraft.java:1482)
    at net.minecraft.client.Minecraft.J(Minecraft.java:834)
    at net.minecraft.client.Minecraft.run(Minecraft.java:764)
    at java.lang.Thread.run(Thread.java:680)
    Caused by: java.lang.ClassNotFoundException: paulscode.sound.SoundSystem
    at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:125)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    ... 13 more
    Caused by: java.lang.NullPointerException
    at org.objectweb.asm.ClassReader.<init>(Unknown Source)
    at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:27)
    at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:167)
    at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:118)
    ... 15 more
    --- END ERROR REPORT 99c3d4f5 ----------




    The above is clear and concise and provides all required information.






    Thank-you for reading this post. I hope this will help out anyone with crashes in the future. Also feel free to post links to this topic to anyone who requires it.


    If you have any suggestions to add to it or to clean up anything please let me know.

    nerd-boy