I have been having the same problem. It won't even let me reprint the labels even though I got charged for them. I just voided the labels then printed the shipping labels through Ebay which worked well. If you're shipping Ebay items, just print a USPS label through Ebay, and it will charge your PayPal account for the postage. It worked great. I was able to print the labels no problem. You can only print one label at a time though, but at least it worked.
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