yesterday my mod was working i didn't make any changes and when i tried opening it i get this error

 

 

 

2013-02-07 11:45:32 [sEVERE] [ForgeModLoader] The following problems were captured during this phase

2013-02-07 11:45:32 [iNFO] [sTDERR] Exception in thread "Server thread" cpw.mods.fml.common.LoaderException

2013-02-07 11:45:32 [iNFO] [sTDERR] at cpw.mods.fml.common.LoadController.transition(LoadController.java:117)

2013-02-07 11:45:32 [iNFO] [sTDERR] at cpw.mods.fml.common.Loader.serverStopped(Loader.java:752)

2013-02-07 11:45:32 [iNFO] [sTDERR] at cpw.mods.fml.common.FMLCommonHandler.handleServerStopped(FMLCommonHandler.java:459)

2013-02-07 11:45:32 [iNFO] [sTDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:559)

2013-02-07 11:45:32 [iNFO] [sTDERR] at net.minecraft.server.ThreadMinecraftServer.run(ThreadMinecraftServer.java:16)

2013-02-07 11:47:08 [iNFO] [sTDERR] Someone is closing me!

2013-02-07 11:47:08 [iNFO] [sTDERR] Exception in thread "Thread-6" java.lang.NullPointerException

2013-02-07 11:47:08 [iNFO] [sTDERR] at net.minecraft.server.MinecraftServer.saveAllWorlds(MinecraftServer.java:358)

2013-02-07 11:47:08 [iNFO] [sTDERR] at net.minecraft.server.MinecraftServer.stopServer(MinecraftServer.java:406)

2013-02-07 11:47:08 [iNFO] [sTDERR] at net.minecraft.server.integrated.IntegratedServer.stopServer(IntegratedServer.java:231)

2013-02-07 11:47:08 [iNFO] [sTDERR] at net.minecraft.client.Minecraft.stopIntegratedServer(Minecraft.java:2538)

2013-02-07 11:47:08 [iNFO] [sTDERR] at net.minecraft.client.ThreadShutdown.run(ThreadShutdown.java:11)

 

 

 

I've had this before, but I don't think it's connected to Forge. Minecraft can (very, very, VERY rarely) create a map from a seed where there's no applicable biome nearby that's flagged as spawn-point-able. (ie deserts, mountains, mooshroom islands, swamps and oceans don't allow spawns) This especially happens when you have 'large biomes' turned on because it increases the chances of no spawn being found (but again this is really rare).

 

All you need to do to fix it is use another seed.

thanks for the reply but i highly doubt it because i got the error on the last three worlds i made so i don't know what it is but if i had to guess it would probably be my biome but it was working before which is strange.

Hate to bump but i cant make any progress till i fix this.