For each new major release of Logic versions 5, 6 and 7 a new licence (or authorization) was required for the XSKey. If you didn't purchase Logic 7, you won't be able to run it. The XSKey has not been required to run Logic since Logic 8 was released in 2007, I seriously doubt that there is any way to get a Logic 7 licence on yours now. But that shouldn't really matter, logic 5 is all you need to open and save your files in order to make them compatible for Logic 9.Mark ! Thanks. I am not sure of the workings of the XSKey other than mine worked on the PC at v5. Did they send a new XSKey with each update? Or update the Key somehow?