I've been using Auction Wizard 2000 from when it was just Auction Wizard. The Issue with UPC (NOT UPS) is that ebay returns messages that may not actually be because of a missing UPC code, but some other problem. When its merely a UPC that's missing, entering N/A will fix it. However, there are other mandatory fields that can return this error, and that's a ebay issue. I usually get a reply to emails within a day, but I have also had to figure out my errors myself occasionally.
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