Hi Danny, I’m kind of new to C4D & rigging, chains and Ik’s. I wasn’t going to reply but I thought I might be able to help I think. But if turning your sweep nurbs to poly’s is your problem, with so many splines and sweep nurbs, I learned that If you right click on the parent object and click on “select all children” then right click again and select “make editable” then while they are still all selected (Select all children again if you have to) right click one more time and click on “connect & delete”. That’ll make 1 Mesh off all your select group objects. Or of course you can make each group “editable” with their children as you go along. I hope this helped. If I misunderstood your problem. Sorry Danny and good luck.
Wow I just realized date posted. Danny is probably a master in C4D and head of his own graphics company by now. Oh well. Maybe it’ll help someone else.