Can't install liveries after fsx.cfg rebuild

After having had a few problems (unrelated to the MD11) I deleted my fsx.cfg and let fsx rebuild it. After this the MD11 still worked fine, but all of the addon liveries had gone. I tried doing a repair from the original installer which ran ok, but didn't put them back, I then tried uninstalling and reinstalling. Finally I tried downloading a new livery and installing that which also didn't work.This has got to be something simple - but I can't find it! - Help!ThanksGary Beers