18 Jul 2012
04 Jan 2012
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Phil, this is an error i've not yet seen, so I expect the support team might have more insight than I, but off the top of my head it looks like it might be an issue with the sitefinity license.
did you use the same license file on both sites? what do you see under license details when you go to Administration > Version and Licensing in the Sitefinity backend?