Why can't I open LO after a download and install?

I’m on a MAC. A couple of days ago I downloaded and installed the latest version of LO. When I tried to open LO a window opened that said, “verifying Libre Office” and it appeared to go through the process. When finished I clicked on the x to close the window and then tried to open LO but it won’t open. I’ve tried a number of times, and even downloaded and installed again without success. Suggestions?

In this reported bug seems there is way to solve it.