This was so trivial, I can't believe I overlooked this. The computers that I have been trying to run the application on are a few years old. The graphics drivers use an older version of opengl which has very strict rules for image dimensions.

After changing my images to power of 2 dimensions (ex. 1024x64) they now appear on the remote computers. This restriction seems to be a little less strict with newer computers. One of the libraries on the newer computers must scale the images for you.

Anyway in order to make the application safe for all opengl platforms Qt + OpenGL must use images with dimensions in powers of 2!

I hope this helps someone else.