Although I own every EA sports FIFA title, im just attempting to use FEd99 for the first time, while the editing is fairly straight forward, iIm having a few problems:
1~ I am unable to Make thumbnails of the Jerseys while editing my team
2~once Ive finished editing I have NO clue what to do, and how to apply these changes. when I try to export changes the following messages pop up "custom.db exisists, overwrite. Y/N" then it ultimately tells me to make sure GFXPAK.EXE is in FEd99 folder???

PLEASE TELL ME WHAT I AM DOING WRONG, any help is appreciated

Go to File/Save to apply these changes to the game.