This may not be related at all, but just a thought...

I know several years ago there was discussion regarding the TASCAM US-800 interface (not yours, but still TASCAM) and whether you plugged it into the exact same USB port as when you installed the drivers, as well as when in the process you turned the power to the unit on. I know yours is a different model, but just thought I'd throw it out there.

Here is the one of the links regarding the TASCAM US-800 (not your model), but the issues may be similar...

...and another thread...

Or it may be something else completely...


John

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