Now I get this all the time...
WebAuthoring abnormal termination.
Client date/time: 2017-08-24T21:53:49.278Z
Version: 2.0.681 (v2.0.681.0)
Session ID: a8d44f97-b66c-111f-4391-4679038a8a6c
description: {"error":{"isTrusted":true,"detail":{"exception":{}},"message":"Script error.","filename":"","lineno":0,"colno":0,"error":null,"NONE":0,"CAPTURING_PHASE":1,"AT_TARGET":2,"BUBBLING_PHASE":3,"type":"error","target":"[window]","currentTarget":"[window]","eventPhase":2,"bubbles":false,"cancelable":true,"defaultPrevented":false,"composed":false,"timeStamp":1813557.7400000002,"srcElement":"[window]","returnValue":true,"cancelBubble":false,"path":["[window]"],"composedPath":"[function]","stopPropagation":"[function]","stopImmediatePropagation":"[function]","preventDefault":"[function]","initEvent":"[function]"},"errorLine":0,"errorCharacter":0,"errorUrl":"","errorMessage":"Script error.","setPromise":"[function]","exception":{}}
stack: null
errorNumber: 0
errorMessage: Script error.