Tinderbox is generally very stable but that does not mean you may not find some data from the app can't ingest from drag/drop or find some configuration next really designed for.
Should the unfortunate occur, and the app crashes, OS X will create a crash log which it can be helpful to Tech Support in resolving the cause. Such logs are found inside your home folder at:
~/Library/Logs/CrashReporter/
or
~/Library/Logs/DiagnosticReports/
Within that folder look for files with names in the format "Tinderbox_yyyy-mm-dd-hhmmss_macbookpro.crash". Basically, the filename retains the date/time of the crash.
If reporting a crash, attach a copy of the log file(s) to your email. It is also very helpful to support is you can describe the events lading to the crash and/or a step-by-step method to trigger the crash.
Occasionally an app may not crash but become very busy and have to be stopped (by the user or the system). In such cases a hang report may be created. These are stored in in the main, system-wide Library:
/Library/Logs/DiagnosticReports
The logs use a similar naming method to the crash logs but use a '.spin' or '.hang' extension.
A more detailed tutorial on crash/hang logs for Tinderbox is available elsewhere.