I am also having this issue. I had no problems at all until the most recent update (I don't think I used the most recent update until now). Now, AE either doesn't refresh the preview, or shows a blank window. If I restart AE, the preview will work, but as soon as I create a keyframe, it quits again. Extremely frustrating, and completely unusable. I also tried creating a fresh project with only a basic comp and imported image sequence, and it's broken right off the start. I'm going to try installing 22.6 to see if that works.
... View more