Thanks for the reply Sean. Yesterday, after about 3 hours I think I have fixed it. I first backed this up, then I just deleted this registry key:
I started Fences again, and it acted like a new installation of it. (uninstalling the app and reinstalling didn't do that) So it asked me if I wanted to have it automatically group icons, and I said yes, and it worked!! My 231 icons were group in 3 Fences. So, then I restored the .reg backup and told it to Restore my old (yesterday) snapshot, and it crashed and failed like before...
So, I deleted that reg key again and rebooted. And went though the same thing again. Only this time I didn't restore the reg key. And I selected my Snapshot from yesterday. And it didn't work. I can't remember if it crashed, but it didn't group anything. So when I later rebooted, it worked!! It used my snapshot and displayed correctly. And today when I booted up it's still working. Time will tell... But I think it's fixed.
I've attached my original Reg key, the new Reg Key after I 'fixed' it, and the way it is this morning (in case anything changed) for you to research if necessary.. I do remember changing that Fences/CrashReporting flag from 1 to 0 in the beginning, and later back to 1. Not sure if that makes any diff.
PS: Also, due to that Event Viewer Permissions error, I added myself as full control for Fences in the Properties/Security tab. That didn't fix it at that time. But I have not removed it yet. But I will now to see if it has any ill effects.
And BTW, I have 4 monitors, triple nvidia surround on top and one touchscreen below that.
Reg Key Files.