"+Ok so you are saying that you are only having the problem with the one flash drive?+"
No, remember that neither the SanDisk nor Memorex on which the files were stored will allow further items to be stored even tho both actually contain only a small portion of their capacity. (See again my Jan 29, 4:00 PM post) I had no trouble storing the jpeg on the third flashdrive because it had none of the afore mentioned files, and I had its full capacity available to me. (See post of Jan 31, 9:02 PM)
I saw the following under Parallels Preferences:
Memory - Adjust Memory Limit -
"Automatically" is ticked, with the maximum setting of 1628 MB.
Under Devices - Shared Folders - "connect all" is ticked and grayed out, "all windows disks" is ticked, "all Mac disks" is ticked and "home folders" is ticked and grayed out.
Under Devices - USB - There are listed IR Receiver, UPS [my battery back-up], Apple Wireless, IP3000 [my printer], MS Optical wireless Mouse [my mouse], Built-in Isight, Apple Keyboard. When a flashdrive is plugged in, it is listed here also. Usually, a flashdrive plugged in when running XP will be recognized, but I have to go to Devices - USB and tick the printer or XP thinks it is off line.