Error Code 46 - Please Help - Windows 7

I’ve installed Comodo on a clients computer (Windows 7). I didn’t get a response to my last post, so I setup a mapped network drive to the NAS. The winxp machine backs up to it fine, but the Win7 machine will not - Comodo says invalid path. Even though the Z: drive is mapped, even though I can browse to it and create a directory, I get error 46. Any ideas?

Did you ever find a solution for this? I have the same problem.