I had exactly the same problem. I had to revert back to last stable version of fences. Never had a problem upgrading before and this makes me nervous about future upgrades.
Sorry to hear you are having trouble.
Well, it needs to be resolved as when 3.10 is released, 3.09 will not be available should you need it again.
For any that have the issue, I needed to know that a purge and clean boot (in that order) were done:
When in that state, and with 3.10 installed, please report back with what condition the PC is in, with screenshots / video, and what you have done to try and resolve it.
Instead of "Configure Fences" at the top of my right-click menu, I had "Start Fences".
If you have performed the purge and the PC is in a clean boot state (new Windows account and only MS services running + Fences enabled in the startup as the directions indicate), please post a screenshot of that.
Stardock Support Manager