I'm spending a snow day with Trailhead and have encountered a glitch.  I just completed the Creating Custom Objects section and did the challenge and Trailhead cannot find the wonderful custom objects that I created to give me my 500 points for meeting the challenge.  It says

Challenge Not yet complete... here's what's wrong:
All the expected custom fields for the Trail__c object could not be found.

I have my developer account open and there those lovely custom objects are, shining bright.  Any ideas about helping Trailhead see my wonderful work?
Merrily Neill