map tiles shaded over in red (in game)

When i launch my game all but one tile type(earthgrass) comes up shaded over with a red kind of like the no acces zones in the editor. On other maps there is just a red overshadowing all over the place in a crazy fashsion. I need to fix this problem realy soon so i would realy realy realy appreciate anyone who could help me out at all (even if you don't know if your idea will fix it) anyway thxs a ton every1 🙂

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Thanks for your help
everyone!

You probably saved your picts with the 'Alpha layer' box checked from within photoshop. Photoshop tends to do that automatically when saving a copy. Save as png or asp pict with the alpha layer box unchecked.

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