@ckolivas: Are there known issues with the newer CG miner versions with Hashfast devices on Windows(tm) or has anything changed prerequisite wise?
I been trying all the cgminer releases since ~4.0 (The hashfast firmware update releases) and none of them works on windows. No devices detected. Only seems to show HID PID's in debug log.
No problems whatsoever on Linux though

problems on windows, but then I have not tried running any hashfast devices on windows since my very first release. You did the WinUSB driver dance with zadig?