I installed both the Opp Alert Coponent and the ContactsToday Component from the Trailhead Module "Working with Custom Lightning Components". However, they are not available to add as components in the Lightning App Builder. I've tried uninstalling an reinstalling, with no luck. The "Custom Components" section in Lightning App Builder shows 0.

Any help would be appreciated - I've had nothing but technical difficulties with this module and I want to earn that darn badge already!

Is anyone encountering this error :

"Challenge not yet complete... here's what's wrong: 
The 'Set Case to Escalated' Workflow field update action was not found."

Not sure what's going wrong, but the action sure is there !