see the image is a pre-existing one. it is a bmp, and im asuming its a 24 bit because it worked in its faction of origin.
I think it should be .bmp
The error message says you are using something else ( probably only in the xml-file? )
where should the .bmp go, i think i know but i want to be sure.
its an upgrade what the image is for so where in the in the xml could the problem be