Crash: Fences Fails to Start after System Crash
App Usage: Fences doesn't start on Windows start-up, then trying to enable Fences by the right mouse contextual menu, continually get the following message:

System details:
Intel Xeon E5-1650 v4 3.60GHz
128 GB RAM
NVidia P4000 graphics card (CAD spec.).
The program itself has been running perfectly for many years without issue, now this disastrous episode has occurred. I've spent the last three hours of 'work time' trying to resolve it, all to no avail. I did try uninstalling, purging and then reinstalling and this got it working but with a default layout. Upon trying to restore any previous backup it gives up and goes back to refusing to start at all.
I've tried killing Explorer.exe but that did nothing.
I've re-booted the machine many times, again no joy.
I love the software, but of course I haven't got the time or inclination to setup my preferred layout each time the system doesn't reboot properly. If this can't be resolved then I'll have to discontinue my use of the product indefinitely. It's a shame but if we can't get it running again that's the only realistic option available to me.
Thanks in advance for any advice you might be able to offer.
Dave