Missing editor

Just bought a new Mac computer and installed XOJO PRO on it. k But when it opens the window to one of my older completed projects, it says “No Editor” in the middle of the opening display. Where is the editor? How do I get to load?

(My license is valid.)

The editor changes depending on what it needs to be. Select something from the navigator on the left and the editor for that type of item will appear.

Duh! Thanks Tim. Obviously that worked.