FPSC and other engines dont always copy all necessary files correctly across to a game .exe publish folder - sometimes they miss files out.
Simply making a note of any missing files and finding them on your hard disk - then copying them into their correct folder locations within the game .exe pubish folder will make them available to your game and it should work fine.
FPSC has enough probs with file tracking so its quite likely it may miss out some files in publishing your game.
FPSC randomly changes all my entity names in the editor library so by name alone I would never know what was what - poor thing gets so confused its a wonder it can find anything.
