I have the same problem.. were you able to figure it out?

Hey folks,

Parameter is incorrect is an idiopathic symptom (it could be a network connection problem, a file with unrecognizable attributes, a corrupted file, or any number of other causes). That is the error that windows reports and it doesn't tend to be very helpful in diagnosing the actual problem. Logging a ticket with support at http://support.pogoplug.com/requests/anonymous/new is really the best and fastest way to resolve issues like these.

Thanks!
Jon

If I try do download a folder from the web interface or drag and drop a folder using the desktop client, it either causes the client to crash or generates this error.
Garbage.

I use bitdefender for antivirus and if I complete uninstall it, I do not get the pogoplug error. I have tried to get both bitdefender and pogoplug to provide advice on how they can co-exist but neithr company seems interested. Completely disabling bitdefender services does not work, only an uninstall. Recent updates to bitdefended have allowed copies to pogoplug to work but not active backup.