Minecraft Forums

I tried to use MagicLauncher to load these mods on 1.5.2:

• EE3
• Forge
• Modloader
• NEI (after that didn't work, I tried TMI)
• Optifine

After having no success whatsoever, I tried to go back to using just Optifine and Forge for 1.7.2. Now, none of my worlds will open for 1.7.2 on MagicLauncher. They load fine on the vanilla launcher. Many of those worlds were created post-1.6.4, too. They were working fine before I loaded MagicLauncher for 1.5.2.My failed attempts at a solution:

• Clearing my .minecraft
• Attempted to install mods manually (I gave up eventually)
• Reloaded important worlds in 1.6.4 then in 1.7.2

A few things I can't do b/c I use a rented school Mac (security is as tight as it can be, giggity):

• Can't modify hardrive much w/o Admin username/password (can still use Commands and Safe Mode, but even then, it may be limited access)
• Can't mess with settings other than stuff like mouse sensitivity and background
• Only personal files (homework, projects, music, etc.) can be modified 100% by me
• Can't install anything w/o using Safe Mode (I don't know how to do that. I would need personal instruction, because the process is very specific and changes every time I restart my computer.)

Crash 1
---- Minecraft Crash Report ----
// Everything's going to plan. No, really, that was supposed to happen.

Time: 2/19/14 9:49 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
at net.minecraft.server.MinecraftServer.a(SourceFile:835)
at bsk.a(IntegratedServer.java:128)
at bsk.e(IntegratedServer.java:152)
at net.minecraft.server.MinecraftServer.run(SourceFile:328)
at ky.run(SourceFile:617)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Mac OS X (x86_64) version 10.9.1
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 490766744 bytes (468 MB) / 530186240 bytes (505 MB) up to 530186240 bytes (505 MB)
JVM Flags: 3 total; -Xms512m -Xmx512m -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Profiler Position: N/A (disabled)
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Very likely; Jar signature invalidated

Crash 2
---- Minecraft Crash Report ----
// Why did you do that?

Time: 2/19/14 10:04 PM
Description: Exception in server tick loop

java.lang.NullPointerException: Exception in server tick loop
at net.minecraft.server.MinecraftServer.a(SourceFile:835)
at bsk.a(IntegratedServer.java:128)
at bsk.e(IntegratedServer.java:152)
at net.minecraft.server.MinecraftServer.run(SourceFile:328)
at ky.run(SourceFile:617)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
Minecraft Version: 1.7.2
Operating System: Mac OS X (x86_64) version 10.9.1
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 490206936 bytes (467 MB) / 530186240 bytes (505 MB) up to 530186240 bytes (505 MB)
JVM Flags: 3 total; -Xms512m -Xmx512m -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Profiler Position: N/A (disabled)
Player Count: 0 / 8; []
Type: Integrated Server (map_client.txt)
Is Modded: Very likely; Jar signature invalidated