Crash on commit 2 files

Actually version is 1.6.5 but I don't know why here is displayed as unreleased.. This is offered as update to me in some previous version but I don't know why this version is not listed as released. When one download SourceTree from http://www.sourcetreeapp.com/ at the moment version 1.6.5 is downloaded.

I have 2 files ready for commit and several more changed that I wanted to commit later-separately. When I clicked commit from toolbar SourceTree crashed completely.