Hi all I have a few soloutions to those using Torque Constructor.
If you find your model isnt exporting properly or you are getting no collision or sometimes missing faces thiis is probably because your using version 1.0.3
dont worry this is easily solved.
simply go to preferences and deactivate the remove hidden faces function.
make sure when you build a model brushes do not overlap each other.
If you have any questions or would like to know more about Constructor check out my website.
http://sites.google.com/a/visionsdev.com/billbops-brain/Homealways make sure your brushes are convex if you make concave brushes this can also cause you a problem exporting.
Constructor does not support concave models.
another thing is do not go into too much detail with constructor its a basic walls floor roof carry on you can do more if you are good at using it but to be honest DTS programs are better for fine detailing your .dif model as you can interact with dts objects.
anyway if you want any help becoming a Computer games Developer we are currently looking for applicants.
Hope this info helps atleast someone, thanks for reading.