I am using the 0.1.2 beta .jar and am encountering the same problem. no mods. i tried deleting ftbetaa and redownloading the modpack, and when i opened a world, Minecraft has crashed!
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Minecraft has stopped running because it encountered a problem; Exception in server tick loop
This error has been saved to /Users/CENSORED/Desktop/FTBBETAA/.minecraft/crash-reports/crash-2012-11-06_21.48.51-server.txt for your convenience. Please include a copy of this file if you report this crash to anyone.
--- BEGIN ERROR REPORT ec936c6d --------
Generated 11/6/12 9:49 PM
- Minecraft Version: 1.4.2
- Operating System: Mac OS X (x86_64) version 10.7.5
- Java Version: 1.6.0_37, Apple Inc.
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
- Memory: 91400 bytes (0 MB) / 129957888 bytes (123 MB) up to 129957888 bytes (123 MB)
- JVM Flags: 0 total;
- AABB Pool Size: 4561 (255416 bytes; 0 MB) allocated, 2187 (122472 bytes; 0 MB) used
- Is Modded: Very likely
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: 807 (45192 bytes; 0 MB) allocated, 300 (16800 bytes; 0 MB) used
- Player Count: 1 / 8; [ih['boozamooz'/237, l='New World', x=-253.50, y=73.00, z=242.50]]
- World New World Entities: 0 total; []
- World New World Players: 0 total; []
- World New World Chunk Stats: ServerChunkCache: 0 Drop: 0
- Type: Integrated Server
java.lang.OutOfMemoryError: Java heap space
at dl.<init>(SourceFile:64)
at ih.j_(SourceFile:147)
at xe.a(SourceFile:1218)
at ie.a(SourceFile:424)
at xe.g(SourceFile:1197)
at xe.h(SourceFile:1122)
at ie.h(SourceFile:352)
at net.minecraft.server.MinecraftServer.r(SourceFile:718)
at net.minecraft.server.MinecraftServer.q(SourceFile:661)
at bcb.q(SourceFile:117)
at net.minecraft.server.MinecraftServer.run(SourceFile:595)
at fp.run(SourceFile:818)
--- END ERROR REPORT 11fae13a ----------
And i allow enough memory.
please help