Help. I messed up SWMBO's Karma and don't know how to fix it.

I wanted to delete some files that she didn't want on her Karma (WHat? She doesn't like Car Talk?) and connected what I thought was a standard USB cable with mini-plug, and everything seemed OK and I deleted the files.

The operation crashed, I had a hard time getting things going again (had to do the paper clip reset thing) and after that I had nothing but trouble...until I dug up the original Karma USB cable, then like magic everything worked normally. Is the Karma USB cable proprietary? It is shaped like a standard USB mini-cable. Or is the non-Karma cable I used (it was for a flash card reader) the non-standard one? Or maybe they both are standard and the flash card cable was defective? Anyway, as I said, everything started working...

Except... The Karma says the files I deleted are still there, but if I try and delete them it says "File not found..." and I have to abort out of the operation.

How do I fix this?

tanstaafl.