Well, it shouldn't be every texture you use oO.
I've found the bug: The algorithm quits when it finds an illegal polygon, one with only one vertex for example.
The texture you are using contains single pixel "objects" and therefore the alg. quits at some point. Check your texture at X:313; Y:4.
I'll remove the bug and work on the missing features tomorrow. I promise.
It's half past midnight here in germany and I've had a few beers an hour ago - so, sorry when I go to bed now :).