You'll have to contact the store to see what to do next. There are some older machines that folk are trying to force this onto the machine and they'll need a lot of help. No Apple employees drop by here so my advice is to call the store.
Bob
I have Mac OS x version 10.7.4 (Lion) installed, and now purchased the new Mountain Lion to have the latest software. Problem is that although the money was taken by itunes S.A store, i now see an error message that it is not available and I must go to the UK store. All I want is the software I paid for. How to fix this?

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