Yeah, it's a bit of a mess, the team are looking into fixes. In the meantime it appears a downgrade is a reasonable workaround. Links to known-good versions:<p><a href="http://downloads.atlassian.com/software/sourcetree/SourceTree_2.1.dmg" rel="nofollow">http://downloads.atlassian.com/software/sourcetree/SourceTre...</a><p><a href="https://downloads.atlassian.com/software/sourcetree/windows/SourceTreeSetup_1.7.0.32509.exe" rel="nofollow">https://downloads.atlassian.com/software/sourcetree/windows/...</a><p>(Disclaimer; I'm Atlassian employee, although not on Sourcetree so I don't have any special insight.)