I am thinking that your current released version of FileSeek (and possibly other stable apps) are still based on .Net 7.0 releases. Since this is now out of support by MS you really need to address this.
I tried removing 7.20 and seeing if 8 would work but it doesn't. I see the Beta verision does work thought.
Can you get these apps onto support releases?

And a time frame Owen? Beta has been there forever already if my memory is correct.