FTB Infinity crashes only when entering a local multiplayer game.

[Ferium]

Title FTB Infinity crashes only when entering a local multiplayer game.

Launcher Type FTB Launcher

Modpack FTB Infinity Evolved 1.7.10

Modpack version 2.6.0

Have you modified the pack? No

Link to log file http://paste.feed-the-beast.com/view/0cbef7f3

Details of the issue Occurance:
Game crashes back to launcher after a couple of seconds upon entering a local multiplayer game, sometimes it does not crash before player starts moving.

Background:
We are mainly two players joining a local FTB Infinity server running on Linux. I have been playing on this setup regularly for about a month. Before the crash, we had been playing for about 5 hours. I have been looting some chests which had thaumcraft related stuff in it. But i didn't crash before i was back in my base.

Using vanilla resource pack. As far as i know, the PC didn't get any new windows or java updates etc before the crash.

Tried solutons:
-Updated java, FTB launcher and modpack.
-Updated the integrated graphic card (Does not have an dedicated one).
-Joined online FTB Infinity servers without crashing, singleplayer works too.
-Tried using FTB Hermitcraft with the same setup, but seems like the same problem happens. (Though Hermitcraft may be to heavy for this pc?)
-Been teleported to another base and emptied my inventory.

In the process of debugging this, I transfered the server from the linux to the other windows pc and started the server. This caused FTB to be "Timed out" rather then crashing to launcher.

 

[Ferium]

Last time i logged in, i was able to move as long as i didn't use the mouse or sprint. Seems input related, but then it should have crashed in singleplayer?

 

[EODCrafter]

1. A fatal error has been detected by the Java Runtime Environment:
2. #
3. # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ffac4a8a3b0, pid=2664, tid=0x0000000000001d64

I think this means you just simply ran out of memory. What is your startup script?

 

[Ferium]

Minecraft has been on a tight balance of too little or too much allocated memory. But it seems weird that it would suddenly start to instant crash after a month of gaming? Especially since it started instant crashing after some hours of gameplay.

The game is usually started with the launcher. In the option tab, the memory setting is set at 3gb out of 6gb. Where we have experimented in the range of 2.5gb to 3.5gb. Is there a startup script generated from the launcher?

Edit:
I created a new world, which didn't crash the game. It seems like the playerfiles are corrupted in some way. But i tried deleting everything about that player in the platerdata folder, And i have deleted and reinstalled everything client related several times. Is there a place i have missed?

 

[EODCrafter]

Not really sure without looking....I have experienced some chunk loaders that seem to corrupt Maps, if that is any help.

 

[Ferium]

Just realized that early in our game, a buddy edited the world file in MCEdit to get rid of some mushroom biomes. It was an older version of MCEdit too, might have done something that the game didn't like. I was thinking of setting the server to offline mode in the server.properties to fix the problem, since it would then treat us as new players in the server. But we just started using Hermitcraft instead, so i won't bother with this issue any longer. Hope someone else finds my efforts useful. Thanks for the help!