I hope you get your money back too. I had to go get a content updater release a little earlier today and input my serial number. It was invalid as well. But I tried different variations and they all came up in valid. Thought it might be the OH vs. Zero issue and tried that. Still invalid. Looked at my serial number once more and read each number and letter out loud and finally found the problem. Somehow, I had typed in a "6" instead of a "G".