Referenced edge does not exist

Hello,

I'm trying to draft a diaphragm, but during circular pattern of the vanes and their radius I keep getting the same error: "Referenced edge does not exist". This results in only the vanes itself being patterned, but not their radius.

The way I've set this up is:

1. Outer-ring revolve.

2. Inner-ring revolve.

3. Establish vane shape by using section-curve on STL file underlay.

4. Use this curve to extrude the vane on both rings (using "Until selected" conditions in extrude menu).

5. United the 3 parts

6. Used edge blend.

Am I overlooking something as to why the edge blend won't be included in the pattern?

Thanks in advance.