2 rail fail

 From:  Nick (BODINI)
1747.1 
Moi V1

I tried to sweep the xy (circular type) profile along the 2 xyz rails (they meet in the middle buy arent connected).
After a minute of thinking, Moi gave up (i love that it just gives up and doesnt crash!). Image below.


Copy same thing over to Rhino, 2 rail sweep it, and instant results! Image below.


So what does Moi want to get it done? 3dm attached.

thanks,
Nick