I recently purchased a ff800 to replace my ff400. When I boot up my PC the ff800 works fine, but when I enter my recording software (ableton and audition) the ff mixer window and settings freeze as well as the program I am using.  All of the ff400 drivers were un-installed prior to installing the ff800 drivers. I had no problem at all with the ff400. Any ideas what the problem may be?

Any help with this matter is greatly appreciated.

Thanks in advance, Ryan