Fozzy916

I have created a fast mission using Eurofighter, but cannot add any weapons. I go into edit mission, find aircraft and select loadout - no weapons at all are listed. I check the payload restriction box and all the weapon configurations appear, but I can't select them. If I uncheck the box, all configurations disappear again. I have tried landing at an airport and requesting re-fuelling/weapons, but again the loadout selection is empty. What am I doing wrong? I also have F-22A Mod and have no such problems, nor with the DLC planes.