Alternatively rename your "FS2004" folder with all the installed scenries to for example "FS2004_old", make a copy of your "FS9.cfg" (if you have made changes there), make a new clean installation to Folder "FS2004", and after that change the folder names agai...

:D :D :D Phantastic!!! :D :D :D When I first saw the size of the project I really could not believe my eyes: 35 GIGA byte .... So I knew it will take some minutes for the full download, and I have to buy a DVD-burner. But finally the download was made (wit full speed 2MBit/s unsing a download manage...