I just purchased Superior Drummer 3 Orchestra. The program downloaded fine and I’m able to open it. I’m now trying to download the Libraries to an external drive due to the size of the Libraries. When I try to change the path, I receive this error message: “The path could not be set. The selected folder is not a valid installation of Superior Drummer 3 library.” It gives me this error message on any drive I try except the Mac HD which give me the message “not enough space.” What must I do to download my libraries? Thanks. Ken Page