used installer for beech 18,installed but exterior of plane is invisible,interior 2d panel and seats,windows perfect.tryed to upload screenshot,don't seem to be able.
It may be too graphic intensive for your video card.
Try turning off most of your slides, FSX will look bad but you want to see if the aircraft shows up.
If it does then you will have to adjust your slides back until both the aircraft and FSX look good.