In the middle of a large label printing job, my Dymo LabelWriter lost functionality. When visiting the System Preferences printers page it was listed as offline. No labels will move when pressing the label advance hardware button. I reset the printer system on my iMac (OSX 10.9.2) and now the printer won't show up at all. I've turned it off and unplugged/replugged the USB but to no avail. I've had this problem before and had a Dymo service rep help me through the process. It was fairly involved and required deleting drivers from some hidden folder and replacing them I believe. But I can't remember the specific steps required. Any help would be greatly appreciated as I have a huge label project to complete this weekend and no Dymo service is available.