How do you set up default app in salesforce lightning?  I would really appreciate if someone helps me.

Thanks,
Neeraja

In Module 6 of Create a Conference Management App, I am continually receiving the following error "The 'SpeakerForm' Visualforce page was not found." I've tried using 3 separate Dev Orgs. I've tried deleting the page and recreating it. Nothing.

I've passed all of the other modules including those that build on the Visualforce Page, so I know I've done it right. Any help would be appreciated, it is the only thing preventing me from completing this module and earning this badge.

Thanks!