Client crashing when joining server

[crital]

So i had a server with creeperhost running forge 1.6.4-9.11.1.935 with various 1.6.4 mods and it worked perfectly fine. Today i decided to update some outdated mods on the server so i first updated the mods in my client and then the server. I updated both the server and the client to Forge 1.6.4-9.11.1.952. The server started just fine except i got some warnings that said:

12:34:35  [WARNING] Skipping Entity with id butterflyGE

12:34:35  [WARNING] Skipping Entity with id butterflyGE

12:34:35  [WARNING] Skipping Entity with id butterflyGE

 

So i tried to join the server and i immidietly crashed. Here is the FORGEMODLOADER-CLIENT-0.LOG.

https://gist.github.com/anonymous/7483862

 

And here is the minecraft crash report.

https://gist.github.com/anonymous/7483882

 

 

 

 

[LexManos]

IIRC that particular line means that the player tried to login to a world that is not loaded, for example. They logged out in the twilight forest, and then you removed the twilight forest mod.

Simplest way to fix is to kill the player's .dat file.

Or you could go in and reset there dimension to 0 using a nbt editor