Unable to reproduce in a test course at this time.
Recent changes made by course team: added and remove a page
changed the name of the Course Info side bar title in the advanced settings
1. Go to: https://studio.edge.edx.org/container/block-v1:McGillX+CHEM181x_3+2015_T3+type@vertical+block@f2f64ffaa08449a58723034d80f16b11
2. Press View Live, See Error Message
Expected Behavior: You will see what appears in Studio
Actual Behavior: View Live throws 404