I have the durametric, 2000 Boxster S with TC, and I tried to use the Durametric to bleed the ABS/TC system. When I clicked the option (I can't remember what it was) nothing happened. I called Durametric and they said that not all features work with all cars but they are always releasing new versions and functionality. It was kind of aggravating since that feature is specifically called out on the website. It is possible that the person I talked to was low level and just giving a canned response, and it is possible that I had an older version of the software and that the feature is implemented in the current versions. Since then I have just done the regular bleed/flush and made sure no air gets in, and it has been good so far.

Why don't you update the software? It's available on the Durametric site for free (unless you have a cable from before 2008).