[MC-12802] Crash upon opening world

Whenever I join my game, it crashes... Please help.

Environment

Windows 7, updated Java.

Linked issues

duplicates 1

MC-11839 Invalid potion effects crash the game. Resolved

Attachments

crash-2013-03-24_15.46.28-server.txt

Comments 1

migrated 2013-03-24T20:57:22Z

Quote from Dinnerbone in MC-11839:

You have a potion effect with a silly ID, most likely caused by a 3rd party editor. We can't really fix this, but I added some crash report info so it can tell you what it was and where, so you can fix it yourself in another editor.