I keep on getting a pop up from my PC saying non- recognized USB device, everytime I plug in ,either a flash drive or my printer. BUT, these devices work fine, plus, they show up in the "desk window". But the fact is that I can't convert Xpress format into PDF through the acrobat distiler (virtual) printer; and I was wondering if it was not linked. Anyway, how come just pluged in USB devices generate this pop up, but work though ?
Thanks