I'm aware of the fact that if you cancel the anim, the exporter will only abort current frame and render others. This should be fixed with next version today or tomorrow.
On the other end, there's no reason the animation stops after 15 frames.
Thiagobulhoes, if you are able to reproduce the issue please post the full output from the console.
Desktop: Ubuntu 13.04 x64 - i7-3770K @ 3.5GHz - 32GB DDR3 - GTX670 2048MB
Laptop: Linux Mint 11 x64 - i7-2860QM @ 2.5GHz - 16GB DDR3 - Quadro 3000M 2GB
Software: NVidia 319.12 - Cuda 4.2.9 - Blender 2.66a