Hi I have been reading a lot on this great site and there are a lot of good inputs to how to get a custom loading picture/screen.
This is what I have done.
I have choose a picture and then saved it as TGA at 24-bit in Photoshop.
Then I have given the file the
mapname_loading_background, and put the file in the folder where my map is.
Then I loading the map in worldbuilder and Export it , this should as far as I can see get the picture in the loading screen.
But, nothing happens.

...still standard loadingscreen for custom maps.
Can anybody help me out here, is there something that I have missing.
Question, should the picture have the same name as the mapname.sga or as mapname.mm, the mapname.SGA is the map you load in worldbuilder and the mapname.mm is the name you give the map with in worldbuilder, and that is the name that you can see on steam.