Viewer problems after update to Foxit 12

I can no longer see pdf-files in the viewer. I just get scrambled text. I just updated my PDF software to Foxit 12. It was working in the earlier version.

I have clicked default in the ActiveX+Preview+Office+Web and I saw that as a suggested solution on your forum. No change. I also unclicked the Foxit boxes but no change.

Does it work in Explorer?

Yes works in Explorer
I use Opus 12.21 x64

12.21 is a year old now. Please try with the current version first.

If FoxIt still doesn't work in the viewer pane, please try these suggestions: