Hello,

Yesterday I started receiving a very vague error message when trying to save a new copy of a Flow.  This is with no changes to the Flow at all since the last succesful change - just getting a fresh copy saved before I start making any changes.  The error message reads "Eror - We're sorry, but a serious error occurred.  Please don't close the Cloud Flow Designer window.  Contact Salesforce Customer Support as soon as possible."  Screenshot below

I've contacted SFDC support and they told me I needed to post this here...