GLSL problems

Hey everyone I am kinda new to the bge and I want to make my high poly mesh low poly without changeling it much. I looked I up on google and found normal mapping. I was following the tutorial and everything was fine. It said open glsl and when I did that and turned on texture mode my character turned black. I added a hemi lamp and nothing changed. When I press P the mesh turns white even tho I have a blue material on it. Is their anyway to fix it?

Can you supply an example blend file so it can be reviewed. Before you save your blend file ensure to pack all textures from the File / Extarnal Data menu.