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Quote:

Q: The ACE says it is in 'Demo Mode' and needs activation. A: This bug will be addressed in the next Service Pack. Please use the following temporary fix: 1. Download the ACE_767.exe 2. Move it to [FSX Root Folder]\Captain_Sim\767\ace folder. Press 'Yes' when asked to replace the file. If the above does not help please read this. From: 767 Captain / TCE/ACE Utility (QID 4662)

I thought this was fixed in v1.5, but seeing as I never had the problem, I don't know if it was. :-/