SourceTree suddenly stopped working for me today. When I first started it up, it couldn't find my Git install. Downloading embedded Git didn't work. Sourcetree would download the files then the popup would come up again (tried this 3 times. Trying to manually locate Git did nothing. Clicking the option just brings the popup back immediately and plays and error noise as does trying to let sourcetree look again. I've updated Sourcetree to 2.48 and Git 2.16.2 64 bit.