Macro interference

If your macros are running on timers then perhaps you should have a global variable that prevents two macros running at the same time. Like:

Public MacroRunning As Boolean

Then, at the start of each macro:

If MacroRunning Then
    Do
        DoEvents
    Loop Until Not MacroRunning
End If
MacroRunning = True

Then at the end of the macro:

MacroRunning = False

WBD