Using XP Home and FS9. Installed 737NG 600/700 ok and it runs fine. However when I go to use the Livery installer I invarably get the following message:-`' The file D:\Programm\Microsoft Games\Flight Simulator 2004\Aircraft\PMDG737-700\Aircraf.cfg Could not be opened. Access denied.'The installer then freezes until I get the MS indication the an error has occured.I am pretty sure that in the past I could install liveries, this was some while ago so am not sure. Any help on this one as it is pretty boring flying with the PMDG colour ! sorry guys !

Have you installed fs2004 in your d Drive rather than Cdrive programme files. Normally fs goes into C drive which might be the problem.