Project Profile Error/Limitation?

I'm attempting to project a profile from an alignment onto another adjacent alignment. Both of these alignments were imported from a .gpk file using the Import Geometry tool and both have active profiles associated with them. When I try to use the "Profile by Slope from Element" tool I select the element I want to profile then when I try to select the second alignment I get the error message, "Invalid Geometry Type". What needs to be done to these elements to make it the vertical geometry tools can be used on them? (CLICK the below .gif to see the issue)