I've always had this problem from what I can remember, the "solution" was to keep the material editor open, but minimized, and to be within the bitmap slot that gets updated. For example if you have a wall that uses material #1, and material #1 has a texture called "wall.tga" in it's diffuse slot, then you'll need to be in…
Hey Vig, I've just got a standard blinn shader goin on, nothing special. Simple 1024x1024 diffuse map on it... and yeah... no update. I was having this problem last night, then I shut my computer down, went to bed, got back to work today only to have the same issues... I miss 2008 :( haha.