SharePoint 2013 Workflow Not Publishing

Greetings,

I have created a simple approval workflow, using SharePoint Designer 2013, and am unable to publish it.  I check the workflow for errors and none are reported.  When I attempt to publish it, I receive the following error:

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Microsoft.SharePoint.SPEndpointAddressNotFoundException: There are no addresses available for this application.
   at Microsoft.SharePoint.SPRoundRobinServiceLoadBalancer.BeginOperation()
   at Microsoft.SharePoint.Administration.SPServiceApplicationProxyBase`1.ExecuteOnChannel(Boolean requireDelegation, Action`1 codeBlock)
   at Microsoft.SharePoint.AppManagement.AppManagementServiceApplicationProxy.GetScaleOutDatabaseMap()
   at Microsoft.SharePoint.SPScaleOutDatabaseMap.GetMapCacheEntries

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Can anyone tell me what the problem might be?

Thank you!