Apparently, the Windows 8.1 upgrade was a terrible mistake. I brought my GT-10B home from the rehearsal space and was going to reconnect it to my freshly-upgraded Win8.1 PC, but for the life of me I cannot get the drivers to install. Somehow, I futzed around and got audio to work, so I can use it for practice, but I really want to mess around with FX Floorboard and custom patches, but I can't do that because FX Floorboard doesn't see the GT-10B. Anyone else with a GT-10B having an issue like this? I'm tempted to roll back to Win8; I *know* it worked there.