First, the glut32.dll you posted a link to doesn't work (on my system). Windows gives an error message of "glut32.dll corrupt, reinstall" message (and yes, I tried redownloading it several times). However, the glut32.dll from both the
OpenGL site or the one from
Nate Robin's GLUT for WIN32 site work flawlessly.
Second, the viewer doesn't properly handle subobjects. It appears that you only use the "Geometric center" parameters and don't take into account the "Offset from Parent Object" parameters. You can look at the Vasudan AWACs model in the FS2 VP files for an example of this (notice that the "nose" of the ship is improperly offset from its proper position, about 2/3rds of the ship's length in front of where it should be).
Besides those things...
nice new feature 
I especially like the light position toggle

And I would agree with Venom, data viewer before texture (useful before nifty).