unable to access zip drive.

[kali]

i just installed a zip drive on my XP 'puter at work and
am unable to back up files because i get "the request
could not be performed because of an I/O device error."
however, i WAS able to retrieve files from the drive
shortly before i tried to back up and got this error.
feel free to contact me directly and thanks in advance
for any and all help.

kali