Debugging and logging crashing?

Hi, my game crashes, and I have to figure out why and fix it. Is there any tool or option to log events to a file? Profiler runs out of samples for some frames, lots of physics with lots of optimizations, etc. Unity Editor also crashed during playtesting.

Edit: Found the logs

 Unity Editor [version: Unity 5.0.1f1_5a2e8fe35a68]
 
 Unity.exe caused an Access Violation (0xc0000005)
   in module Unity.exe at 0033:40578432.
 
 Error occurred at 2015-06-08_090130.
 C:\Unity5\Editor\Unity.exe, run by [redacted].
 87% memory in use.
 16367 MB physical memory [2126 MB free].
 16918 MB paging file [438 MB free].
 8388608 MB user address space [8384451 MB free].
 Write to location c8070088 caused an access violation.