I bought an upgrade version of Photoshop CS5 thinking my CS3 was registered. After installing and registering
CS5, I find out my CS3 was not and CS5 won't activate. I just found out that Adobe makes any previous version serial number invalid if not registered at time product was current. Looks like I have to buy another version of CS5, but full version. Can anyone explain to me what needs done to transfer my upgrade version license if I sell it to someome?