Now here's a strange one. If I try to launch FSX-SE from the desktop item it tells me that Steam must be running first, so I launch Steam, try the shortcut again and away we go. However, if I already have Steam running and go to my Library to launch FSX I see the entry greyed out with an Install button instead of Play. I can't verify the file integrity via the Properties tab because as far as Steam is concerned the game is not installed, so there are no files to verify. Any ideas, please?

David