Crash when selecting commit in history

After making a commit. Selecting a commit in the history crashed the application. The application continued to crash on open because of the selected repository. I renamed the repository directory so the application would load without crashing. Pointing to the working copy and again selecting a commit item in the history caused a crash. Git is git-1.8.1.2 preview 20130201 from git-scm.com. System is on a standalone network (no internet).