Your image is way too big. The game doesn't like it when you try to load images over 1020x1020. But when you do try and do that, the game will actually give you that error, so I don't think that's what's happening in this particular case.
Where are you keeping your image file - in your mod folders or in the SOMA folders? If the former, then that might be your issue. The DevBat only loads your map file, not your mod's resource.cfg. Unless you've edited SOMA's resource.cfg to also include your mod's folders, nothing in there will be referenced, and therefore can't be loaded.
When I took your image, shrunk it down to 512x512, and added it to SOMA's graphics folder, I was able to get my terminal to load your image just fine.
Try loading your map with the ModLauncher and see if you get the same error.