I have been using Cubase 8 Pro for a couple months now with no issues. This new issue affects old projects, new projects; the problem is persistent.
Interestingly enough I noticed that at start up all the stuff on the left was gone, which I was happy about. But I have a feeling the root issue is causing this aswell:
I found these two posts dealing with similar issues:
The first thread had a solution so I searched for the mentioned culprit .vst3 and came up with this:
Oddly the one in the main folder is 0kb??? I tried deleting the other one/installer patchcache - it had no effect. I then deleted the main Cubase Plug-in Set.vst3 - it had no effect. I restored both files.
I have windows 8.1
16 gigs of ram
various 7200rpm drive