Appearently randomly occurring error that closes world

[joris914]

I have installed the 1.2.5 pack using MultiMC, added Rei's Minimap and Optifine (both for 1.2.5). Everything seems to work perfectly at first, but when I start playing in a new world, after a short time (1-2 minutes) it stops working and goes to the 'saving chunks' screen. When I try to exit MultyMC and open the world again, it instantly goes to the 'saving chunks' screen as soon as the world should appear. It doesn't show an error report, as far as I can tell. Complete MultiMC Console Copy+Paste is here, http://paste.ubuntu.com/1308160/
I simply put the whole thing in there because I have no clue where the problem starts, if it even shows in there.

Edit: I tried to generate a new world (same instance) after deleting the old one, and this time it went to the 'saving chunks' screen almost immediately in the process of generating a village. I've been thinking it maybe crashes while generating a/some specific item(s)?

Edit 2: Yeah, so the problem definitely was optifine, I've played for half an hour without it, and it worked fine, despite stuttering. Maybe it's because I used the HD multi-core version for 1.2.5, so now I'm gonna try again with HD C6 Smooth, see if that works.

Edit 3: Still doesn't work with Optifine smooth, but when I put vanilla video settings to the lowest it works fine. Thanks!

 

[egor66]

try removing Optifine, the rest work I know, ok I guess you did this but I will say anyway, you have to make new instance run it one time, then down grade to 125 run it again, then copy over the pack to the instance /dir, its a good idea to run it now to check all loads with no errors, then add one at a time anything else you may wish too, & run it after each new mod added, that way you can trouble shoot your way around any problems.

one thing you can try is the rebuild jar from the right menu, its not really used for single player but....

if none of this works you may need to remove & reinstall java 6 is the one for 125, not the latest 7, 142 should be starting to take advantage of java 7, so until the 140+ ftb mod pack stick to java6.