http://pastebin.com/QMdGZtpY

OpenBlocks-1.7.10-1.3-snapshot-560
OpenModsLib-1.7.10-0.6-snapshot-308
EnderStorage-1.7.10-1.4.5.27-universal

Yeah, but what block have you placed adjacent to chest?

ow yeah i've forgot, an ender tanks with OB liquid xp on top on 3 OB tanks sorry ^^

Ok. Now, do you have stacktrace in logs (before crash) containing Notice: Error creating tile entity? If you can find it, can you post it here?

owe hmm i check that

http://pastebin.com/YET45i1A :)

OpenModsLib-1.7.10-0.6-snapshot-306.jar != snapshot 308. Update.

adjacent to chest woot ? this crash happen when i log into my server i really don't know :/ i have some OB tanks with milk connect to a MFR rancher, some ender tanks on a liquid transfert node from ExtraU

You have at least one OpenBlocks block adjacent to ender tank. If possible, please downgrade to release and check.

EDIT: ender tank location: 1111,72,-1270

oops derp