Thanks, Nate. That worked, I thought I had to replace the INF in another driver package in order to get it to work.
However, I have the same problem that Oldminer mentioned above: BFGminer find the Gridseed Orbs and mines fine for the first while. After about 30 or so minutes, the speed drops and they eventually stop accepting shares. I have read about the FIFO buffers and tried messing with those, but it seems to behave the same with them enabled or disabled. Any ideas? I'm using BFGminer 4.1 on Windows 7.
I've unfortunately never seen such an issue with any Orbs, Blades, or DMUs on any of the OSs I have setup for testing and dev.
Is there a way I can provide you with a log file so you can have a look at it and maybe identify something? I don't think there's anything left for me to try to get it to work...