Is there any way to tell at-a-glance what the exact problem is? I've tried repainting the magenta lines around changed areas and trimming the alpha channel way back to make sure it's not in a bad area, but the file is still broken. I never had a working GameFont.tga file with my religion icon changes, and converting from either a base epic game font or a Final Frontier file is not really an option as there are too many changes between Final Frontier and the epic game, some of which I need to restore (commerce icons, great people, power), some of which I need to keep (resources). Unfortunately, I'm not a graphics expert and I only really know how to make buttons. I don't know what program Firaxis uses to make these files, but whatever it is I'd love to have it, as it appears to make editing these files child's play.