CC 2018 on Windows 8.1?
I took the offered upgrade to Premiere Pro without looking too closely, I'm afraid. After converting a 2017 project file, it opens, but all the media is gone. Black. Video, titles, graphics. Whether I look at an asset in the Preview panel, or play a sequence in the Program window, everything is black. Somehow the audio is still there but THAT'S ALL.
Should I have stayed with CC 2017? I'm hoping somebody has a neat trick that will restore everything back into the project. I hate uninstalling and reinstalling.

