KendoInput: Combo open step fails on playback with a javascript error. It's a dynamically populated dropdown - if you create a delay to wait out the ajax request - it will pass. Run the test attached to the internal description. Exception message:ExecuteCommand failed! InError set by the client. Client Error: System.InvalidOperationException: Javascript call [$(\"#products\").data(\"kendoDropDownList\").popup.toggle()] failed! Please make sure the function exists and the call is using the correct prototype signature. Javascript error: TypeError: Unable to get property 'popup' of undefined or null reference at ArtOfTest.InternetExplorer.IECommandProcessor.InvokeFunction(String functionCall, Boolean useEval, Boolean returnJSON) at ArtOfTest.InternetExplorer.IECommandProcessor.ProcessActionCommands(BrowserCommand request) at ArtOfTest.InternetExplorer.IECommandProcessor.ProcessCommand(WebBrowserClass ieInstance, BrowserCommand request, IHTMLDocument2 document) BrowserCommand (Type:'Action',Info:'NotSet',Action:'InvokeJsFunction',Target:'ElementId (tagName: '',occurrenceIndex: '-1')',Data:'$(\"#products\").data(\"kendoDropDownList\").popup.toggle()',ClientId:'Client_ba2cc5ff-dc32-49d2-b8d3-4c3851f0b801',HasFrames:'False',FramesInfo:'',TargetFrameIndex:'-1',InError:'True',Response:'System.InvalidOperationException: Javascript call [$(\"#products\").data(\"kendoDropDownList\").popup.toggle()] failed! Please make sure the function exists and the call is using the correct prototype signature. Javascript error: TypeError: Unable to get property 'popup' of undefined or null reference at ArtOfTest.InternetExplorer.IECommandProcessor.InvokeFunction(String functionCall, Boolean useEval, Boolean returnJSON) at ArtOfTest.InternetExplorer.IECommandProcessor.ProcessActionCommands(BrowserCommand request) at ArtOfTest.InternetExplorer.IECommandProcessor.ProcessCommand(WebBrowserClass ieInstance, BrowserCommand request, IHTMLDocument2 document)') InnerException: none.