This has happened to me three times. I'm in Canada, I sell via Ebay.com. I try to use Fedex to generate a shipping label for an overseas customer and the system fails. It reports there was an "error" and to try later. Different computers, different browsers, makes no difference. Canada Post labels work, but they cost between 50% and 70% more than the figure Fedex provides. Ebay cannot figure out the problem, though they have tried.