I just reformatted my hard drive. Went from vista ultimate to windows 7. All that has went very well. I re-installed my FS9 and updated it to version 9.1 And now I am trying to install my md11 and it keeps telling me I dont have version 9.1 and wont let me install the md11. Yet... I DO have version 9.1 I apologize if this is in another post somewhere... I couldnt find it if it was. Any help or workaround would be greatly appreciated! Thanks to all! Tim Grant

This is usually due to a registry glitch if all else is okay. Try the registry repair tool free from Flight1, be sure to run it with admin rights in W7.