RobA wrote:
Okay. So is this a bug then? All my other graphic programs open that TGA fine...
Yes, I think it would be worth reporting this issue as a bug at GNOME Bugzilla, since the TGA format (contrary to what imagined until recently) still proves to be an important and most used extension in the world of computer graphics:
http://en.wikipedia.org/wiki/Truevision_TGAAlthough I am not very experienced in reading and handling the GIMP source code, however I have the impression that the "file-tga-save" procedure must be affected by some flaw causing the program to misinterpret the alpha channel information of certain TGA files like the one you posted, where most likely this channel's values are improperly inverted.