SourceTree won't launch after update to 1.9.6

[Jeanne Petrangelo]

My older 1.9.5 does work if I re-install that, but 1.9.6.0 does nothing at all if I try to launch it. It does not even leave any messages in AppData\Local\Atlassian\SourceTree\sourcetree.log.

What might be preventing it from opening?

I'm running Windows 10.

[tstickel]

Where can i get 1.9.5     -->  1.9.6  just locks up my main windows 10 desktop and spawns off tons of processes  "git for windows" with no ending...   I need an older version!