VBA error 91 object variable or with block variable not set - With ActiveWindow

[Huhenyo]

I have had 60+ users using the following code without any problems, but I have one user who gets the run-time error 91 with the following code (using the same version of Excel) which pulls up a form that just gives the user information and they can click a box to tell it not to pop up again and click ok.

Private Sub Workbook_Open()
    If GetSetting("RRIP_Settings", "Workbook_Settings", "Hide_frmNoWarranty") <> "True" Then
        frmNoWarranty.Show False
    ElseIf GetSetting("RRIP_Settings", "Workbook_Settings", "Hide_Getting_Started") <> "True" Then
        frmGettingStarted.Show False
    End If
    Application.DisplayFormulaBar = False
    With ActiveWindow
        .DisplayHeadings = False
        .DisplayGridlines = False
    End With
    ActiveSheet.Protect
End Sub

Does anyone have an idea why she would get this error, but no one else seems to have problems?

Thank you!

 

[Norie]

Where do they get the error?

 

[Huhenyo]

Norie, thanks for trying to help. We ended up being able to resolve the issue. I had change a macro name that was assigned to the object and no one else had clicked on it since I made that change so everyone else would have had the same error, but no one reported it because no one had clicked on that rarely used button/object.