Shared workbook + macros

Hi,

I am creating a shared workbook in Excel 2010 - this is unavoidable.

In it I have protected cells, filters, grouping and macros in order to make those work together. The macros work when the file is not a shared document, and activate on opening. However, they do not work when I share the file. According to shared workbook limitations, I can share pre-protected documents, and run pre-shared macros.

My question therefore is, why, when I open my shared file does a "Run-time error '1004': Application-defined error" occur?

I would really appreciate some help

Rich

Macros:

[code]
Private Sub Workbook_Open()

Run "Test"

Run "Group"

End Sub

[code]

[code]

Sub Test()
    ActiveSheet.EnableAutoFilter = True
    ActiveSheet.Protect contents:=True, userInterfaceOnly:=True
End Sub

[code]

[code]

Sub Group()
    ActiveSheet.EnableOutlining = True
    ActiveSheet.Protect contents:=True, userInterfaceOnly:=True
End Sub

[code]