Anybody have any ideas about this beyond deleting and re-adding the agent? I've got the same problem, but I've deleted, rebooted, and re-added the agent about ten times to no avail. I've tried three different USB sticks (all SanDisk, but different sizes, different USB versions, etc.) Nothing seems to make any difference. I can copy MP3's to these same USB sticks using Composer, so it doesn't seem like it's really a problem with reading or writing the USB sticks. It's only Screensaver that's having trouble.