So, I was playing Minecraft today and I decided to take a hike to find a good crossroads of biomes to set up my Forestry bee room. I was walking along, and suddenly, my game froze and up popped "Saving Chunks". I got a crash report, and this is what it says:
Display Spoiler
Mods loaded: 34
ModLoader 1.2.5
mod_CodeChickenCore 0.5.2
mod_MinecraftForge 3.1.3.105
mod_NotEnoughItems 1.2.1
mod_Direwolf20House Direwolf20 House v1.1 for Minecraft 1.2.5
mod_DoggyTalents 1.2.5
mod_EE 1.4.4.0
Extrabiomes XL 2.0.0
mod_InvTweaks 1.41b (1.2.4)
mod_Minions 1.2.3 @ MC 1.2.5
mod_RedPowerControl 2.0pr5
mod_RedPowerCore 2.0pr5
mod_RedPowerLighting 2.0pr5
mod_RedPowerLogic 2.0pr5
mod_RedPowerMachine 2.0pr5
mod_RedPowerWiring 2.0pr5
mod_RedPowerWorld 2.0pr5
mod_WirelessRedstoneCore 1.2.0
mod_WirelessRedstoneRedPower 1.2.0
mod_WirelessRedstoneAddons 1.2.1
mod_BuildCraftCore 3.1.5
mod_BuildCraftBuilders 3.1.5
mod_BuildCraftEnergy 3.1.5
mod_BuildCraftFactory 3.1.5
mod_BuildCraftTransport 3.1.5
mod_LogisticsPipes 0.2.5 (built with Minecraft 1.2.5, Buildcraft 3.1.5, Forge 3.1.2.90)
mod_BuildCraftSilicon 3.1.5
mod_Forestry 1.4.4.4
mod_BuildCraftZFP (Forestry Package)
mod_IC2 v1.95
mod_IC2AdvancedMachines v4.0
mod_IronChest 3.3
mod_PortalGun 1.2.5v1
mod_ThaumCraft 2.1.4
Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem.
--- BEGIN ERROR REPORT a85228f6 --------
Generated 5/9/12 7:55 AM
Minecraft: Minecraft 1.2.5
OS: Mac OS X (x86_64) version 10.7.2
Java: 1.6.0_29, Apple Inc.
VM: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
LWJGL: 2.4.2
OpenGL: NVIDIA GeForce 9400M OpenGL Engine version 2.1 NVIDIA-7.12.9, NVIDIA Corporation
java.lang.NullPointerException
at mod_IC2.generateSurface(mod_IC2.java:1258)
at ModLoader.populateChunk(ModLoader.java:1219)
at ko.a(ChunkProvider.java:204)
at ack.a(Chunk.java:1177)
at ko.c(ChunkProvider.java:113)
at ko.b(ChunkProvider.java:126)
at xd.d(World.java:647)
at xd.a(World.java:562)
at vf.a(SpawnerAnimals.java:206)
at vf.a(SpawnerAnimals.java:120)
at xd.c(World.java:2802)
at net.minecraft.client.Minecraft.k(Minecraft.java:1867)
at net.minecraft.client.Minecraft.x(Minecraft.java:819)
at net.minecraft.client.Minecraft.run(Minecraft.java:747)
at java.lang.Thread.run(Thread.java:680)
--- END ERROR REPORT a0921b2b ----------
So it happened when IC tried to generate something (quite possibly a rubber tree as I have IC2 copper and tin turned off and I was walking through a swamp at the time) and the game crashed. Whenever I load the world now, it opens for a second, I have control of my character, and then the game crashes again probably when it tries to generate the new chunk. I installed ExtraBiomesXL the night before and this play session was the first time I played it on my main world, so it's quite possible the error came from it. I figure the error isn't IC2's fault, but as it was the mod that showed up in the error report I figured I should take it here.