I discovered something and I am also having some problems...
First, here's a screenshot of my experiment file, I was looking at how the different orientation of the faces affected the outcome of the process. Interesting!
Now, I'm having some problems.
When I try to use the 2 Faces + Path plugin, it gives me an error: It is necessary to select two faces and one path curve.
As far as I can tell, I have (1) one curve and (2) two faces selected. The curve is made with two arcs, welded together with the weld.rb.
I've also attached the skp for this file. Any assistance would be greatly appreciated!
I forgot to add, it worked yesterday. Then today it stopped. I've reloaded the rb, but no luck. Here's a shot of it working yesterday...
Goes with first Screen Shot
The file that won't work!