crash when creating new world (7.2.6)

[scabbed]

Sometimes my server crash when i try to create a new world (maybe its a ram problem, i have about 22 custom biomes, and i disabled all the default one)

i have to try like 3 time, then the third time works without a crash

http://pastebin.com/K9UHjpE3

[minelazz]

Please reupload with latest version if you still have the issue. If not, please close your issues.