I think I've found the problem where Excel thinks that a UDF Sort is called (see text in bold):
<v:textbox style='mso-direction-alt:auto' o:singleclick="f">
<div style='text-align:center'><font face="Arial" size="200" color="auto">Sort Standards</font></div>
</v:textbox>
<x:ClientData ObjectType="Button">
<x:Anchor>
1, 7, 4, 24, 2, 34, 4, 45</x:Anchor>
<x:PrintObject>False</x:PrintObject>
<x:AutoFill>False</x:AutoFill>
<x:FmlaMacro>[0]!_xludf.Sort</x:FmlaMacro>
<x:TextHAlign>Center</x:TextHAlign>
<x:TextVAlign>Center</x:TextVAlign>
</x:ClientData>
Please follow this steps:
Make a backup copy of the file
Open Excel
File \ Open \ Browse \ Select the file \ Press the SHIFT key and hold it down \ Click Open
Wait till the file is opened \ Release the SHIFT key
Press Alt-F11 to open the VBA Editor
Go into module PI_Stds and search for Sort (it's the second sub from the bottom)
Rename Sub Sort() to Sub MySort()
Close the VBA Editor
Go into sheet "Standard Sheet Index"
Right-click the "Sort Standards" button (within cell B5) and choose "Assign macro"
Select "MySort" and click Ok
Select cell A1
Save the file
Close and Reopen Excel
Does this fix the issue?
Andreas.