As this has come up a few times, a re-up on this link Using OS X Finder to locate Crash and Hang logs.
For a crash, you are likely to see the crash reporter dialog, but if you force quite the app you are less likely to do so. Either warm the resulting logs are written to two different places on your Mac. The above link shows you how to find them.
As a user a crash is annoying, and the info is meaningless to most of us. But, taking a moment to =mail the logs to email@example.com can help the developer figure out the source of the gremlin. Adding into the email what you were doing at the time also helps give context to the developer. Dpoing this is enlightened self-interest as it helps fix issue others haven’t yet met.