AE 2020 on 16 core Mac Pro with Pro Vega II GPU - Comp window does not work
The comp window does not show anything in AE2020. It program seems functional, but you cannot see anything in the comp. AE2019 does not have this problem on the same computer. In installed the 17.1 update and it did not fix the problem
Anders Lewis commented
This is likely caused by an issue that should be fixed in later beta builds. In the meantime the following two steps might fix it:
Delete the file at ~/Library/Preferences/com.Adobe.After Effects.[your version number].plist.
Clear your preferences by holding Command+Option+Shift while AE is starting.
Please let us know here if you've tried the above and the issue still persists.