I just removed the 8.0 version and installed the previous version, 7.3.  Right now it works but for how long is the question of the day.  I will have to wait to find out how this version works in the next few days.  The 8.0 version quit working about...

I have the same problem.  I have PT 8.0 using a Macbook Pro Big Sur version 11.0.1.  It doesn't matter whether I open a previous file from someone else or building one from scratch.  I reported the issue twice and have not had any response back from ...