1. Open Zebra Setup Utilities (if you don't have this program you can DOWNLOAD IT HERE)
2. select your printer 
3. click open printer tools
4. click the action tab
5. select reset printer and click send
6. select load factory defaults and click send
7. select calibrate media and click send

Once you've done the above steps you can try printing labels again. If this doesn't work for you, reach out to us and we will help you out.