You might want to give us a little more explanation as to when this error occurs. I'm not too familiar with the "ContextSensitiveTools from the Viewer menu items" topic that you mentioned. Are you asking about the right-click menu of the Meas. Studio for VB controls in which you can select context sensitive help? Or are you talking about using the Object Browser from which you can access in the VB "View" menu (as opposed to "Viewer menu")?
Jason F.
Applications Engineer
National Instruments
www.ni.com/ask