I got my SNES Powerpak today and can't get it to work at all.

I e-mailed RetroUSB but I'm not expecting a response over the holiday weekend. The compact flash card I bought from them can't be recognized by my computer. I got another CF card, but can not get it to be recognized by the Powerpak no matter what I do. Including reformatting it on two different computers and getting the same errors. I fear I got a defective unit. Ah well, I was really hoping to play with it over the long weekend.