On Mac I am running into a verifying problem with the verification getting stuck halfway and not moving. The app also stops bouncing after a while on the bar at the bottom during the verification
I'm not sure, unfortunately. You can try the solutions given in !zMAC USERS PLEASE READ.txt, and see if any of them work, or see if googling the issue returns anything promising?
https://www.google.com/search?q=On+Mac+I+am+running+into+a+verifying+problem+wit...