Pftrack 2011 collada export into Blender 2.6x or higer ERROR MESSAGE

Hi everyone

Right now I get a weird error trying to import a collada pftrack file into blender. Suddenly start to fail. This are the screen captures



Yesterday everythings go fine, I import the .dae and blender read it well. The only change I made where the Blender 2.68 instalation and PFtrack 2012.
I just dont get what change, anybody has the same issue???

Greats all!!!
MATU :smiley: