Steps to reproduce: 1. Select a Test List result from "Results" tab 2. Press on E-mail dropdown and choose "VS Results File" The exception body: [02/21 09:37:01,Telerik.TestStudio.Desktop.exe(440:1),Error] App.LogUnhandledException() : EXCEPTION! (see below) Situation: Unhandled exception! Outer Exception Type: System.ArgumentException Message: The parameter 'fileName' cannot be an empty string. Parameter name: fileName HRESULT: 0x80070057 (Official ID (if app.) = E_INVALIDARG, Error Bit = FAILED, Facility = FACILITY_WIN32, Code = ERROR_INVALID_PARAMETER) Call Stack: at System.Net.Mail.AttachmentBase.SetContentFromFile(String fileName, String mediaType) at System.Net.Mail.AttachmentBase..ctor(String fileName) at System.Net.Mail.Attachment..ctor(String fileName) at ArtOfTest.WebAii.Design.UI.MailUtility.OpenEmailWithAttachment(String subject, String bodyText, String attachmentFilePath) at ArtOfTest.WebAii.Design.UI.ResultsViewerControl.<EmailSelectedResults>d__59.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<>c.<ThrowAsync>b__6_0(Object state) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)