So I decided to go back to something I was working on about 18 months ago. All seemed fine until I came to make the blueprints. At which point all the textures were upside down! They looked fine in my image viewer. No worries, just use TGAFlipper once. Try again. They still appear upside down. WTF. They now appear upside down in the image viewer. OK... Flipped them a second time. Finally they look OK. The thing is I could swear I had previously double flipped them back when I first created them. Either that or this ol' feline is gettin' forgetful. Cest la vie.
TR