That is exactly what I have been doing. I open the 64 bit version, it asks for the code. I put in the code, it gives me the message - "photoscan is already activated" . I am then stuck with the demo version. It does not look like I can I have both the 32 bit and the 64 bit at the same time. All I want is to cancel the 32 so I can use the 64. Nothing I tried has worked.