hm interesting I don’t think we encountered this problem before.
So it did install just fine, but when you try to open options to connect it to your CMS you see this error?
I wonder why it has issues with watchdog, could please have a look here The Windows Player automatically restarts itself / Windows Player Watchdog
The second part, please try to do that (rename the exe for watchdog, so it doesn’t start with Xibo player)