Hello World,
A simple function, MachMsg has always run well on several different machines but receives an error message when run on a machine with version R 2.42

If IsActive(Digitize) Then
       MachMsg("The Probe Input Is Already Active", "PROGRAM HALTED",0)
      Exit Sub
End If

Can you tell me what needs to be updated or how to get around this?
Your help is appreciated, John