Every time I try to edit a fillet in Solidworks 2017 SP3 to add or remove an edge, I get the error "Edge for fillet/chamfer does not exist."  Has anyone else had this problem?

The only workaround I found is to delete the fillet feature and add a new fillet feature with the new edge added.

I had a colleague open the same part file and it adds just fine. is there something wrong with my install?

Thanks.