I have been having the same problem every now and then. It is really frustrating, especially after contacting the tech support they were not really helpful and didn't understand what the issue was. Right now I am trying to print a label as I have sold some books on FB and AGAIN, this message comes up that there was an error and that I should try again! URGH, really frustrating! Please do share if you found a solution to this. Thank you!!!
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