Quicken for Mac crashes on startup

First, you should know that it's very questionable whether you'll be able to restore data from the Quicken cloud. It wasn't designed for this and has ben impossible in the past. Recently, there's been an experimental feature added to allow users to start a new desktop file from their Cloud data, but user reports here seem to have had more failures than successes.

So working backwards, can you share a little more information about your Quicken data file? Why are you talking about starting from your Cloud data? Do you still have your desktop file? Do you have any backups of it? 

And now back to the problem of Quicken crashing. Is there any message before or when it crashes? Does the Quicken menu bar get displayed, or dos it crash before that? Try launching the application by double-clicking it in the Applications folder while holding down the Shift key. Do you get the dialog asking if you want to open your previous data file, or does it crash before that? If you get the dialog, if you click Cancel instead of Open, does Quicken complete its startup?

The next thing I'd try is launching Quicken in a different Mac user account, but I'll hold off on describing that process until hearing back from you.