I had an encode job which couldn't continue because the x264 encoder crashed twice immediately after it began and no log was created. The same job could continue in x86 version.
Code:
Faulting application name: x264.exe, version: 0.148.2744.0, time stamp: 0x5841e4d4
Faulting module name: TIVTC.dll, version: 1.0.5.0, time stamp: 0x4b9c46b6
Exception code: 0xc0000005
Fault offset: 0x0000000000038d30
Faulting process id: 0x1b74
Faulting application start time: 0x01d285badee72b7d
Faulting application path: C:\megui-core-2690-64\tools\x264\x264.exe
Faulting module path: C:\megui-core-2690-64\tools\avisynth_plugin\TIVTC.dll
Report Id: 27b9548f-f1ae-11e6-a926-00a0c6000000