-Solved-
There was an extra file in my Be2c folder, that allowed me to fly single missions with it, but not when I added the Be2d folder. The file removal did the trick. Not sure how that extra file "BE2_Hangar" got there, but I guess I did it myself . Also a big thx to Javigato on his post on the 3rd of August about the "EffectShaderName=effectLightLevel.fx" now my effects are working fine :) and the smoke tracers are wonderful.
If my only add on plane is the Be2c I can fly it in missions in FA2, but if I add the Be2d, then I can only fly the Be2d quirk. Have anyone else encounterd this problem?