Hi Anthony, I did a little test whipping up a corrugated tube in Wings3D:

The tube has four parts/bones.

Did a very simple rig in PP-2014, but I can see no rendering errors where the bones connect:

No problems in preview, either.

Could it be you didn't delete the "cap" facets where the bodyparts connect when you modelled the tube?

This usually gives a welding error where two bones / bodyparts connect: