What's the status on this exporter? Just trying to get something to export in 2.77a and whilst mesh and anim export, the objects UV's are all over the place and nothing I've tried has fixed it (deleted, rebuilt, flipped, split etc.). There is still interest in a simpler export script like this BTW even though there are a number of other more complex ones available (the only thing it could do with is selectable export rather than exporting the contents of the Scene, other than that, there is demand/interest in it).
I think the rotation of the UV is off, could you screenshot it with better resolution and let's say black and white vertical stripes in white 50px black 50px pattern? That would help me to solve it.
This is because the exporter has re-designed mesh weight calculation that gives better results, but seems that I need to see into the alignment of the faces when doing it.