A little help please,

I'm modifying some piping, and I keep getting this error message;

"Component 90 Long Radius Elbow Buttweld cannot be inserted on a Weld component."

How is it not possible to place a buttweld 90deg long radius elbow on to buttweld component? WTF?

Running CADWorx 2018 SP1 on AutoCAD 2018.

Figured it out....

Couldn't see that there was a weld gap on the end of the other buttweld component. Changed view, and voila. It was visible. Deleted it and it inserted no problem.