Created an age that didn't contain cave or skylands, getting this error!

[IIsamonkey]

2013-01-24 22:33:37 [INFO] [STDERR] java.lang.NoClassDefFoundError: l
2013-01-24 22:33:37 [INFO] [STDERR] at a.<init>(CrashReport.java:27)
2013-01-24 22:33:37 [INFO] [STDERR] at a.a(CrashReport.java:319)
2013-01-24 22:33:37 [INFO] [STDERR] at yc.a(World.java:412)
2013-01-24 22:33:37 [INFO] [STDERR] at com.eloraam.redpower.world.WorldGenMarble.searchBlock(WorldGenMarble.java:32)
2013-01-24 22:33:37 [INFO] [STDERR] at com.eloraam.redpower.world.WorldGenMarble.a(WorldGenMarble.java:65)
2013-01-24 22:33:37 [INFO] [STDERR] at com.eloraam.redpower.world.WorldGenHandler.generate(WorldGenHandler.java:117)
2013-01-24 22:33:37 [INFO] [STDERR] at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:90)
2013-01-24 22:33:37 [INFO] [STDERR] at im.a(ChunkProviderServer.java:259)
2013-01-24 22:33:37 [INFO] [STDERR] at zz.a(Chunk.java:1258)
2013-01-24 22:33:37 [INFO] [STDERR] at im.c(ChunkProviderServer.java:153)
2013-01-24 22:33:37 [INFO] [STDERR] at il.<init>(PlayerInstance.java:35)
2013-01-24 22:33:37 [INFO] [STDERR] at ik.a(SourceFile:172)
2013-01-24 22:33:37 [INFO] [STDERR] at ik.a(SourceFile:203)
2013-01-24 22:33:37 [INFO] [STDERR] at gm.a(ServerConfigurationManager.java:163)
2013-01-24 22:33:37 [INFO] [STDERR] at gm.c(ServerConfigurationManager.java:206)
2013-01-24 22:33:37 [INFO] [STDERR] at gm.a(ServerConfigurationManager.java:123)
2013-01-24 22:33:37 [INFO] [STDERR] at bec.b(IntegratedServerListenThread.java:96)
2013-01-24 22:33:37 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:702)
2013-01-24 22:33:37 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)
2013-01-24 22:33:37 [INFO] [STDERR] at bdz.q(IntegratedServer.java:123)
2013-01-24 22:33:37 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
2013-01-24 22:33:37 [INFO] [STDERR] at fy.run(SourceFile:849)
2013-01-24 22:34:35 [INFO] [STDERR] Exception in thread "Server thread" java.lang.NoClassDefFoundError: l
2013-01-24 22:34:35 [INFO] [STDERR] at a.<init>(CrashReport.java:27)
2013-01-24 22:34:35 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
2013-01-24 22:34:35 [INFO] [STDERR] at fy.run(SourceFile:849)


If you need any more of the report, it's on this Pastebin: http://pastebin.com/ZgUtJ9G8
Thanks in advance for any help

Just to add, yes I know I'm stupid for doing it and to be honest I don't know how I did it... My game lagged, so my guess is that when I paused and in an attempt to click on options it landed on LAN :/

P.S I know LAN should end when I close the world, but it has caused the crash

 

[gsx2a]

Is dimension 6 a cave/sky world? I have seen this error when you generate and age as a cave/sky world and marble generation goes bad. Did you have that age before the crash?

 

[IIsamonkey]

Dimension 6 was a flat world with single biomes, the red stone biome and had coloured skies/clouds and eternal day. I don't think I put anything in terms of "sky" or "cave" but now that you mention it, no I didn't have it pre-crash.

 

[Nessiroj]

This is the cause of the error, it has nothing to do with skylands or caveworlds. The change it happends to crash with the same error on those worlds is higher.

2013-01-24 22:33:37 [INFO] [STDERR] at com.eloraam.redpower.world.WorldGenMarble.searchBlock(WorldGenMarble.java:32)
2013-01-24 22:33:37 [INFO] [STDERR] at com.eloraam.redpower.world.WorldGenMarble.a(WorldGenMarble.java:65)
2013-01-24 22:33:37 [INFO] [STDERR] at com.eloraam.redpower.world.WorldGenHandler.generate(WorldGenHandler.java:117)
2013-01-24 22:33:37 [INFO] [STDERR] at cpw.mods.fml.common.registry.GameRegistry.generateWorld(GameRegistry.java:90)

The problem is the mystcraft + marble regeneration. It's a know bug. Only thing you can do is throw away the world and make a new one

 

[IIsamonkey]

Is that all I can do!? I can't give up this world! I've put hours into it! Isn't there anything I can do to just get me out of that age and back into the overworld? Then delete age 6?

 

[Nessiroj]

Getting you out aint a problem, you can do that with NBTEdit (or delete your player.dat file but you will lose your inventory atleast).

I'm not referring to the world, only to age 6

 

[IIsamonkey]

I did that and it worked, however after creating a different age and getting the same issue, this didn't work :/ Same error though :/

Edit: Never mind, it worked after another attempt Thanks for your help!