Crash when updating to 0.11.20

[Youri]

Updated my game from 0.11.19 to 0.11.20 today, got a crash at the end of the update but the game did manage to automatically restart, in the proper new version. In other words, I got an error but it appears to me like nothing odd happened.

Pastebin of logs: http://pastebin.com/JjTyAHbw

[kovarex]

Hard to tell what happened, I'm moving it to 1/0 until it can be reproduced (can it be?).