So i i been playing my FTB 1.5.2 Bete v0.8 singleplayer world for sometime now its been logging on fine but till now once i come in. I tryed to log onto my world and it says "Loading world" and its just stuck there here is what my console says (2013-07-30 00:14:14 [INFO] [Minecraft-Server] Saving chunks for level 'FTB 1.5.2 Bete v0.8 Survival'/Overworld
2013-07-30 00:14:14 [INFO] [STDERR] java.lang.NullPointerException
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraftforge.common.ForgeChunkManager.saveWorld(ForgeChunkManager.java:826)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraftforge.common.ForgeInternalHandler.onDimensionSave(ForgeInternalHandler.java:70)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraftforge.event.ASMEventHandler_2_ForgeInternalHandler_onDimensionSave_Save.invoke(.dynamic)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraftforge.event.ASMEventHandler.invoke(ASMEventHandler.java:39)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraftforge.event.EventBus.post(EventBus.java:108)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraft.world.WorldServer.func_73044_a(WorldServer.java:907)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.func_71267_a(MinecraftServer.java:346)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.func_71260_j(MinecraftServer.java:379)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraft.server.integrated.IntegratedServer.func_71260_j(IntegratedServer.java:240)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:523)
2013-07-30 00:14:14 [INFO] [STDERR] at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
2013-07-30 00:14:14 [INFO] [ForgeModLoader] The state engine was in incorrect state SERVER_STARTING and forced into state SERVER_STOPPED. Errors may have been discarded.) could someone help me cause i been doing so hard on this work and i want to play,
I tryed backups and redownloading the modpack everything but its still not letting me get onto my Survival FTB world