{"action":"closed","issue":{"url":"https://api.github.com/repos/XCompWiz/Mystcraft-Issues/issues/132","labels_url":"https://api.github.com/repos/XCompWiz/Mystcraft-Issues/issues/132/labels{/name}","comments_url":"https://api.github.com/repos/XCompWiz/Mystcraft-Issues/issues/132/comments","events_url":"https://api.github.com/repos/XCompWiz/Mystcraft-Issues/issues/132/events","html_url":"https://github.com/XCompWiz/Mystcraft-Issues/issues/132","id":107356035,"number":132,"title":"Odd, random crash related to worldgen. I think it may have to do with mystcraft","user":{"login":"starg09","id":1235066,"avatar_url":"https://avatars.githubusercontent.com/u/1235066?v=3","gravatar_id":"","url":"https://api.github.com/users/starg09","html_url":"https://github.com/starg09","followers_url":"https://api.github.com/users/starg09/followers","following_url":"https://api.github.com/users/starg09/following{/other_user}","gists_url":"https://api.github.com/users/starg09/gists{/gist_id}","starred_url":"https://api.github.com/users/starg09/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/starg09/subscriptions","organizations_url":"https://api.github.com/users/starg09/orgs","repos_url":"https://api.github.com/users/starg09/repos","events_url":"https://api.github.com/users/starg09/events{/privacy}","received_events_url":"https://api.github.com/users/starg09/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":8,"created_at":"2015-09-19T21:06:19Z","updated_at":"2015-09-22T13:42:51Z","closed_at":"2015-09-22T13:42:51Z","body":"Well, here's how it happened: I mention other mods, although in the end the solution was to remove Mystcraft. That's why I'm reporting it here.\r\n\r\n--------------------------\r\n\r\nI was testing my pack's new version, where I added mystcraft (In FTB Launcher, code \"frutas\". I'm talking about v2.0.2). So, I decided to play for a bit and check no major problems happened after the update. I started a new world, played for around 1 hour without problems, then closed in a plain and went to sleep.\r\n\r\nToday, I reopen the world, explore a bit more, and closed before going to have lunch. I want to note that before saving, I found a vanilla dungeon, broke the spawner, then went to the surface and closed. Also, I was relatively close to a Roguelike Dungeon (filled with spawners).\r\n\r\nAfter getting back, I tried adding optifine, as I'd forgotten I wanted to check if there were any problems using it. Once I loaded the world, and moved 5 blocks in one direction, [this crash happened](http://paste.ee/p/6SOiE). I removed it after that, but [the same thing happened again](http://paste.ee/p/eccIx).\r\n\r\nThen I noticed this in the crash report, regarding BetterFPS:\r\n\r\n    Class transformer null safety: found misbehaving transformers: me.guichaguri.betterfps.transformers.MathTransformer(me.guichaguri.betterfps.transformers.MathTransformer@26b0c789) returned non-null result: 0,me.guichaguri.betterfps.transformers.EventTransformer(me.guichaguri.betterfps.transformers.EventTransformer@1ffc0737) returned non-null result: 0\r\n\r\nSo, I tried removing BetterFPS. [Nope](http://paste.ee/p/KKJDZ). Then, I tried removing the most recently updated mods one by one. Latest one was mystcraft, so I removed it. No more crash, the world continued working properly. Re-enabled BetterFPS, still no crashes.\r\n\r\nI'm not exactly sure what caused it, but from the crash report it looks to me like it has something to do with spawners (maybe the ones from Roguelike? They're a bit different than the usuals.). Anyway, that's basically it. I hope this helps you enough. I guess I could upload a backup of the world before the removal of mystcraft, I think Arome does one as I load the map."}}