Hello folks!
I had similar issue and it was caused by a missing plugin that works for both Ae and Pr, I use flicker free which normaly it’s inatalled on a common folder for both apps, since I installed again the plugin but this time in a diferent disk, I started having the issue, I tried to open a project in Premiere and got the message
Video Filter missing: AE.Digital Anarchy Flicker Free
I solved the issue reinstalling the plugin at the adobe common path, in my case something like that:
C:\Program Files\Adobe\Common\Plug-ins\7.0\MediaCore\
Now all working just fine.
Cheers!