When you delete the camera section from the pov file, you are removing the:
Code:
right < -1.330000, 0.000000, 0.000000>
This is used by the pov exporter to alter the coordinate system (because AC3D and pov use different coordinate systems). With this in, it will render fine but removing it will effectively flip everything in the X axis and that's why you are seeing the textures flipped.
I can provide the source for the POV exporter to be used as a plugin if you wish to make modifications.
Andy