Got a difficult one. I have some windows that I have modeled from scratch and when looking ingame they don't appear unless they have a NONE transparency set in 3DSimEd. It doesn't only apply for windows though, anything with any kind of transparency has this. They appear fine on no transparency but with any kind of transparency they don't appear at all.
Model was created in Max 2010, then exported via the Pandasoft .X plugin (Although think the same issue occured exporting .3DS but I will try again to confirm. and materials set in 3DSimEd. Textures created in either Paint.Net or Photoshop, both have the problem. And yes, it does look fine in SimEd.
Any help on the matter?