I have had the same problem as it was not made clear that the upgrade was only suitable for versions 9 and 10. I finally got a refund, but had to go through PayPal disputes despite 2 different attempts to get it here and 14 days of trying. I now have to buy the full version of 11 at the full price as in the 14 days trying to sort this out the birthday discount is no longer available. I can't go back to version 7 as the demo of 11 installed over it and I no longer have 7 or them key. Complete nightmare....not impressed at all.