"Inconsistent Texture Display in FSX"

I have imported my FS9 Vancouver(CYVR) scenery into FSX, and apart from the horrendous hit on frame rates and ground polygons bleeding through it doesn't look too bad, in fact the various textures look a lot brighter than in FS9.But there is a bit of an anomaly with a transparent green glass texture(bmp)that I used. In the control room in the main control tower, the glass texture does not show at all, just an empty space. The control room was created in EOD, placed in Airport and compiled wih SCASM. Whereas in buildings elsewhere (Fairmont lobby, Penta Aviation) where I have used this transparent glass texture, it shows up fine. These latter buildings were created with NovaSim, placed into Airport and compiled with SCASM.Anyone have any opinions or advice so that I can get the control room to show up correctly.NigelVancouver