Do you mean after ilmlp sugestion? Have to confess I forgot about that. Before trying that I stood close 1 hour admiring the place where my legs/feet should be and it solved nothing.
I had all of the builingds add-ons I could find in the nexus, so my best bet is that Covenant chose one correupt and kaput. Last time this happaned to me was in the begining, prob around 1.0.3, where I tried a plan for the red stop that had CC content (which I never bought). Soon after applying the plan, same thing as this time. CTD if I got close to th red stop.
I still have the save, but I changed a lot of the mods for the new playthough. I kept the add-ons mods, if it happens again I'll to investigate further.
Thanks for the help guys.