DTXbmp to RSbin tools import problem

Hi guys I'm trying to repaint some GN Empire Builder Pack 1 cars into Phase III Amtrak cars and I'm having a problem importing my repaint from DTXbmp to RSbin tools. The repaint doesn't show in RSbin tools after import and I don't know what causing it. I went back and made sure i did everything right but its no good. Can i get some help? Please? Thanks!