Hi Jack,
Have you Set up the Record Summary in the Quotes App? The Record Summary shows How the individual 'Quote' Records will be displayed on App Ribbons, and not setting this up will cause a Parsing error to occur when clicking the app ribbon itself.
For example, I have a Cars App (Every Car has a Contact - Related to the Contacts Table) I have the Record Summary set up as;
Which will show up in my Contact App Ribbon as;
Thanks Jack.
-Ben