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So I just compiled a bunch of mods for a private modpack. I installed and continuously tested them in MC so as to make sure there were no errors with each new mod install. When I tried to add OpenBlocks, it errored. I decided to wait and try to fix this at the end and finished the installations of the rest of the mods. I eventually did, and tried OpenBlocks again and it still didn't work. I have the OpenMods coremod installed and the OpenPeripherals mod installed.

Any help would be great, thanks.

The java error string:

Exception in thread "main" [21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: java.lang.NoClassDefFoundError: openblocks/asm/OpenBlocksClassTransformer$1
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.Class.getDeclaredConstructors0(Native Method)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.Class.getConstructor0(Unknown Source)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.Class.newInstance(Unknown Source)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.registerTransformer(LaunchClassLoader.java:88)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper.injectIntoClassLoader(CoreModManager.java:101)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: Caused by: java.lang.ClassNotFoundException: openblocks.asm.OpenBlocksClassTransformer$1
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: ... 8 more
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: Caused by: java.lang.IncompatibleClassChangeError: Implementing class
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.ClassLoader.defineClass1(Native Method)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.ClassLoader.defineClass(Unknown Source)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.security.SecureClassLoader.defineClass(Unknown Source)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[21:38:55] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: ... 10 more

The full crash report would be nice

Full log:

[13:49:16] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[13:49:16] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[13:49:16] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[13:49:17] [main/INFO] [FML]: Forge Mod Loader version 7.10.85.1277 for Minecraft 1.7.10 loading
[13:49:17] [main/INFO] [FML]: Java is Java HotSpot(TM) 64-Bit Server VM, version 1.8.0_25, running on Windows 7:amd64:6.1, installed at C:\Program Files\Java\jre1.8.0_25
[13:49:17] [main/WARN] [FML]: The coremod appeng.transformer.AppEngCore does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:17] [main/INFO] [FML]: [AppEng] Core Init
[13:49:18] [main/WARN] [FML]: The coremod buildcraftAdditions.preloader.BCALoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:28] [main/INFO] [STDERR]: [codechicken.core.launch.DepLoader$DepLoadInst:checkExisting:435]: Warning: version of ForgeMultipart, 1.1.1.320 is newer than request 1.1.0.309
[13:49:28] [main/WARN] [FML]: The coremod codechicken.core.launch.CodeChickenCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:28] [main/WARN] [FML]: The coremod cofh.asm.LoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:29] [main/WARN] [FML]: The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:29] [main/WARN] [FML]: The coremod invtweaks.forge.asm.FMLPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:29] [main/WARN] [FML]: The coremod micdoodle8.mods.miccore.MicdoodlePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:29] [main/WARN] [FML]: The coremod mcp.mobius.mobiuscore.asm.CoreDescription does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:29] [main/WARN] [FML]: The coremod codechicken.nei.asm.NEICorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:30] [main/WARN] [FML]: The coremod openblocks.OpenBlocksCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:30] [main/WARN] [FML]: The coremod openmods.OpenModsCorePlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:30] [main/INFO] [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.7.10_HD_U_B4.jar
[13:49:30] [main/WARN] [FML]: The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:30] [main/WARN] [FML]: The coremod lumien.randomthings.Transformer.RTLoadingPlugin does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:31] [main/WARN] [FML]: The coremod thaumcraft.codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:31] [main/WARN] [FML]: The coremod codechicken.core.launch.DepLoader does not have a MCVersion annotation, it may cause issues with this version of Minecraft
[13:49:31] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[13:49:31] [main/INFO] [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker
[13:49:31] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[13:49:31] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[13:49:31] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[13:49:31] [main/INFO] [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker
[13:49:31] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:49]: OptiFineForgeTweaker: acceptOptions
[13:49:31] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg:49]: OptiFineForgeTweaker: injectIntoClassLoader
[13:49:31] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:179]: OptiFine ClassTransformer
[13:49:31] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:179]: OptiFine URL: file:/C:/Users/Jake%20Helmert/Desktop/Modpack%201.7/.minecraft/mods/OptiFine_1.7.10_HD_U_B4.jar
[13:49:31] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg:179]: OptiFine ZIP file: [email protected]
[13:49:31] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:39] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[13:49:39] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[13:49:39] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:39] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:40] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:41] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:41] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:41] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:42] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:43] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:43] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:43] [main/INFO] [INpurePreloader]: Attempting to detect JVM version...
[13:49:43] [main/INFO] [INpurePreloader]: Detected JVM: 1.8
[13:49:43] [main/INFO] [INpurePreloader]: Starting library configuration...
[13:49:45] [main/INFO] [INpureLogInterceptor]: System attached to FML. Now intercepting all logging calls.
[13:49:45] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:45] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:45] [main/INFO] [STDOUT]: [micdoodle8.mods.miccore.MicdoodlePlugin:getASMTransformerClass:104]: Successfully Registered Transformer
[13:49:53] [main/INFO] [STDOUT]: [micdoodle8.mods.miccore.MicdoodlePlugin:injectData:297]: [Micdoodle8Core]: Patching game...
[13:49:53] [main/INFO] [STDOUT]: [micdoodle8.mods.miccore.MicdoodlePlugin:injectData:297]: [Micdoodle8Core]: Patching game...
[13:49:53] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:54] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:54] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:54] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:55] [main/INFO] [STDERR]: [thaumcraft.codechicken.core.launch.DepLoader$DepLoadInst:checkExisting:459]: Warning: version of ForgeMultipart, 1.1.1.320 is newer than request 1.1.0.309
[13:49:55] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:55] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[13:49:57] [main/INFO] [OpenMods]: openmods.config.simple.ConfigProcessor.process(ConfigProcessor.java:73): Parsing config file 'C:\Users\Jake Helmert\Desktop\Modpack 1.7\.minecraft\config\OpenModsLibCore.json'
[13:49:57] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
Exception in thread "main" [13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: java.lang.NoClassDefFoundError: openblocks/asm/OpenBlocksClassTransformer$1
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.Class.getDeclaredConstructors0(Native Method)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.Class.getConstructor0(Unknown Source)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.Class.newInstance(Unknown Source)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.registerTransformer(LaunchClassLoader.java:88)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper.injectIntoClassLoader(CoreModManager.java:101)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.Launch.launch(Launch.java:115)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: Caused by: java.lang.ClassNotFoundException: openblocks.asm.OpenBlocksClassTransformer$1
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.ClassLoader.loadClass(Unknown Source)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: ... 8 more
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: Caused by: java.lang.IncompatibleClassChangeError: Implementing class
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.ClassLoader.defineClass1(Native Method)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.lang.ClassLoader.defineClass(Unknown Source)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at java.security.SecureClassLoader.defineClass(Unknown Source)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)
[13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: ... 10 more



The jar file for OpenBlocks is "OpenBlocks-1.7.10-1.3-snapshot-430.jar", OpenModsLib is "OpenModsLib-1.7.10-0.6.jar". It would also be great if you guys could point out in the log where you found out my error, I'm planning on expanding the modpack often and I'd prefer not to be forum dependent. Thanks!

[13:49:28] [main/INFO] [STDERR]: [codechicken.core.launch.DepLoader$DepLoadInst:checkExisting:435]: Warning: version of ForgeMultipart, 1.1.1.320 is newer than request 1.1.0.309

Your codechickencore does not match your forge version. Probably is mismatched to NEI as well. I don't know if you don't have the latest NEI/CCC or if your forge is maybe too new for it. Go to http://chickenbones.net/Pages/links.html, select 1.7.10 and then pick Recommended versions for both NEI and CCC by clicking on universal links. If that doesn't fix it, try downgrading forge to recommended 1230.

Exception in thread "main" [13:49:57] [main/INFO] [STDERR]: [java.lang.Throwable$WrappedPrintStream:println:-1]: java.lang.NoClassDefFoundError: openblocks/asm/OpenBlocksClassTransformer$1

Yeah still wrong version of openblocks. If you're going to go with snapshots, get latest being 544:
http://www.openmods.info:8080/job/OpenBlocks/
and matching lib file 294:
http://www.openmods.info:8080/job/OpenModsLib/

However if you're building a modpack, that you might share with others, a stable version is maybe what you want to rather go for:
http://www.openblocks.info/
for both openblocks and openblockslib.
Do rememeber that openblocks goes into your mods folder and openblockslib goes into your mods/1.7.10 folder instead. Same goes for codechickencore and codechickencorelib (if you happened to unpack it manually instead of letting forge do it).