I am also having this problem- Except it happens when I'm trying to copy a folder of 7 mp3's from my C:\ drive to a SecureDigital card (F:).

If anyone can identify the cause of this problem (as in, why it happens) I would greatly appreciate it. A workaround is sort of helpful, but there must definitely be a better solution than "compress the files then copy them". We are not idiots and we don't have to just "cope" with something, we can FIX it!