Cannot figure out how to make cross sections SS3

I'm trying to cut cross sections of my horizontal alignment which is preloaded in an .alg file. Here's the process i follow:

1.) I "View Active Horizontal" in order to display my horizontal alignment.

2.) I click "Create Cross Sections" under the Corridor Modeling task.

3.) It then prompts me to select the alignment graphic...i click on the line generated in the first step. 

4.) I set my intervals and all the settings

5.) It opens up a new model but this model is blank. No cross sections were generated. I tried to Fit to View but there is simply no info.

Note: After selecting the alignment in step 3, the dialog does not read out the alignments name which leads me to think that it didn't really select it. Photo attached below.