Game crashed shortly after I started a GUI local wiggle walker.
Last lines of log.txt:

***** STARTING THREAD ActionLocalMinimize
delta_score: 0.00134167
Playing sound: 4
***** ENDING THREAD ActionLocalMinimize

UNHANDLED EXCEPTION
1: library_main +2907350 bytes (no line)
2: library_main +2766637 bytes (no line)
3: library_main +2539167 bytes (no line)
4: library_main +2538796 bytes (no line)
5: library_main +2907850 bytes (no line)
6: library_main +2765527 bytes (no line)
7: library_main +3081418 bytes (no line)
8: library_main +3072379 bytes (no line)
9: library_main +4246395 bytes (no line)
10: library_main +5267872 bytes (no line)
11: library_main +4150744 bytes (no line)
12: library_main +4500101 bytes (no line)
13: library_main +4596056 bytes (no line)
14: library_main +831809 bytes (no line)
15: library_main +4738543 bytes (no line)
16: library_main +6333885 bytes (no line)
17: library_main +4147184 bytes (no line)
18: library_main +27627 bytes (no line)
19: library_main +19 bytes (no line)
20: no symbol (no line)
21: no symbol (no line)
22: no symbol (no line)
23: BaseThreadInitThunk +18 bytes (no line)
24: RtlInitializeExceptionChain +99 bytes (no line)
25: RtlInitializeExceptionChain +54 bytes (no line)

------------------------

OS: Win7 64bit
Build ID: 20150608-3283c37895-win_x86-devprev
Binary version: df188b3477cd7617746a47661a7b4d90