title: No application is associated with the specified file for this operation (VB.NET)
body: <p>We have a Win Forms application that produces a pdf with iTextSharp, saves it to a local directory and the application then opens the file. With one customer (all XP boxes and Adobe Reader 11) it throws the following error</p>
  
  <pre><code>No application is associated with the specified file for this operation
  at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo)
  at System.Diagnostics.Process.Start()
  </code></pre>
  
  <p>Which would suggest Adobe Reader is not associated correctly with the pdf extension apart from the fact they can navigate to the local directory and open the file without any problem whatsoever.</p>
  
  <p>Anyone come across this oddity before?</p>
  
  <p>Edit re ZippyV - example of a typical sub</p>
  
  <pre><code> Public Sub PDF_Functions_LogCalls_RunReport(ByVal Customer As Boolean)
      Try
          Dim vOutput As String = LogCalls_Run(Customer)
          If Left(vOutput, 5) = "Error" Then
              TaskDialog.Show(MainForm, AppBoxError("File Error", vOutput, "Error"))
              Exit Sub
          End If
          If System.IO.File.Exists(vOutput) Then
              Dim P As New Process
              P.StartInfo.FileName = vOutput
              P.StartInfo.Verb = "Open"
              P.Start()
          End If
      Catch ex As Exception
          EmailError(ex)
          Exit Sub
      End Try
  End Sub
  </code></pre>