If you want to report an issue, please give us these informations :

• the version of git-tfs you use : git tfs info
• the version of TFS you use (and if that is migrated from a previous version)
• the version of Visual Studio or Team Explorer Everywhere you use (if possible)
• the debug informations when the bug could be reproduce. Just add the option -d to the command that do crash.
• and like all good reporting, the most informations you can on the context and what you are trying to do and steps to reproduce the problem (if possible)