FSX Scenery Library

[bobby48w]

I have just installed an "add on" scenery into the FSX scenery library but it doesn`t appear in the library list. It does appear in the scenery cfg file and is working okay so it is definitely activated.
My OS is Vista and up till now I have had no problems with the scenery library. All my previous add ons are listed in the library. Has anyone else had this problem and if so do you have a solution for me please?