I'm trying to upload a custom image in my map so it displays as the Preview Image.
The image's extension is TGA. It's a conversion from a JPEG, with PhotoShop's "Save As".
The image's dimension: 451x463 (I don't know why it isn't a square, I was pressing Shift while selecting in Photoshop, but anyways)
I've imported this image in the map with the Import Module.
Now, under "Map Info", I set both Preview Image Small and Large to be this image.
I publish and look at the map on B.net, but the image is a yellow error image. :S

What's wrong?
It's the third time this happens to me, in 2 different maps.

EDIT: Decided to crop the image's size so it is a perfect square... and it worked.