btw, here is the mock-up I use
It should be a 500x365px, png. The background is transparent, could it be the problem?
Shouldn't be an issue with background transparency. Just to double check, you have it in the 'player/winpanels/' folder and you've named it the '(name in values.txt)trophy.png' exactly to make sure?
The first thing that broke it was it was looking in the game resources instead of the file directory which it should be doing and got it working unless there's another quirk.
(Edit: Annoyingly, it works fine in the debug version but breaks on export. Gonna have to look more into it x.x)