I am aware of this problem. I'd need to either buy a newer version of Delphi to compile to 64 bits (and do the proper changes to the program) or convert it to Lazarus (Free Pascal) and make a 64 bits version of the program with it. The high memory usage limitation is mostly related to the way the program deals with the Refpack compression. Anyway, buying a new Delphi is not financially viable for me at all. And, right now, I have other priorioties, although I plan to convert the source to Lazarus at some point.