I'm having a similar problem as the person in this question, but the answer that has been marked as "correct" is a solution that no longer works.
answers.atlassian.com/questions/300711/the-older-version-of-sourcetree-cannot-be-removed
I've been trying to upgrade Sourcetree to the latest. I kept getting "The older version of SourceTree cannot be removed". I've deleted the Sourcetree files and the SourceTree local data.
The Microsoft Installer Fixit tool the was recommended in the answer above is no longer available at the provided url. When I search for it, I get a message that says it is not supported on my version of Windows (I'm running Windows 10).
I need help here. I can't reinstall Sourcetree and I can't uninstall SourceTree.