Help Worlds not loading.

[PranCraft]

My worlds are not loading after I updated mindcrack to 1.4.7

This is what the console said: 2013-01-28 22:03:01 [SEVERE] [ForgeModLoader] The following problems were captured during this phase
2013-01-28 22:03:01 [INFO] [STDERR] Exception in thread "Server thread" cpw.mods.fml.common.LoaderException
2013-01-28 22:03:01 [INFO] [STDERR] at cpw.mods.fml.common.LoadController.transition(LoadController.java:117)
2013-01-28 22:03:01 [INFO] [STDERR] at cpw.mods.fml.common.Loader.serverStopped(Loader.java:761)
2013-01-28 22:03:01 [INFO] [STDERR] at cpw.mods.fml.common.FMLCommonHandler.handleServerStopped(FMLCommonHandler.java:464)
2013-01-28 22:03:01 [INFO] [STDERR] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:559)
2013-01-28 22:03:01 [INFO] [STDERR] at fy.run(SourceFile:849)
Someone help please!

 

[dementia]

There are some issues with Loading worlds between updates. What I recommend you do is download the old version and rename the folder when you want to play the new version. Switch the names of the different versions folders as you wish to play that version. If this is unclear I will write it out in steps for you.

 

[PranCraft]

There are some issues with Loading worlds between updates. What I recommend you do is download the old version and rename the folder when you want to play the new version. Switch the names of the different versions folders as you wish to play that version. If this is unclear I will write it out in steps for you.

I don't think its cause of the update, because at first when I updated it was fine but after while it didn't work.

 

[Nessiroj]

Can you upload the whole logfile to pastebin, there might be something else causing this problem

 

[Elmilo]

Are you using Optifine? The B6 version (and before) will not work and cause this type of crash - Version C2 (available from the Optifine thread on minecraft forum) is reported to fix this issue (C1 did fix it for sure, but borked block updates - I have not tried C2 yet but will try tonight and report)

 

[PranCraft]

Thanks elemilo I was using optifine and now I use C2 and world loading works fine. Thanks again!