It is possible that the expansion installer has detected you have a no CD crack and believes this is because you have an illegal copy rather than you don't think you should have to put the disc in every time you want to play - I don't think you should either! Try re-installing the original first which should overwrite the crack and then try the expansion again.
There should be no reason why it should not work because one is a Sold Out version. Right, i need to know if you can install the official Zeus expansion Master Of Atlantis: Poseidon onto a Sold Out version of Master Of Olympus Zeus.
