I think I'm a little unclear. I mean i downloaded and installed the Beta offline installer version. Not the Beta Stable build - that's not a thing - that's just me confusing my terms. It was the *Beta offline installer* version that installed and runs with out crashing.
Thank you so much!! It seems to have worked. I am keeping my fingeres crossed that it will still work once it will automatically update itself. After over a week without Dropbox and several unhelpful emails from the support (plus no more replies now for over 3 days), it is syncing.