media pro C1 roundtrip

Hi,

I have a photo file to process in C1. I right click and go to open in in MP and choose C1. C1 opens, but I get a dialog that says new catalog, new session, or browse. The file does not open in C1, but the training video suggests it should instead ask if i want a new album, etc.

How do I get the photo to open in C1 fro adjustment as the videos show?

Thanks, steve