   Texture is a White Block
  When I run my OpenGL application on some computers, the textures show up as white blocks as though they aren't loading. However, I have logging in place to tell me when a texture loads or has a problem. The log doesn't show any problems and the program runs as designed... Just with white rectangles instead of my texture. Am I missing something?   
  There could be some stuff:- Are you setting the MIN/MAG filters to something like LINEAR?- The computer's GPU might not support non power of two texture sizes.- If the texture size is large, the computer's GPU might not support such size.Can you be a bit more specific?   ;  this happens to me when my textures are not of dimensions that are a power of 2...make sure they are 4x4 or 64x128 for example   ;  Dont forget to call glGetError   