Sourcetree error "remote: empty password" after updating to new version 2.1.10.0

I updated my Sourcetree installation today and could no longer push to my Bitbucket repositories. Seems like I'm not the only one who gets the error

remote: empty password

A workaround until they fix this bug is this - copy the first line of the Sourcetree error message (which is the Git command that failed), open a new terminal window (Shift-Alt-T on Windows), and paste it in, hit return. This will run the Push command and ask you for your password.

UPDATE: Here's a permanent fix - delete the file named passwd located in AppData\Local\Atlassian\SourceTree