One user opened Excel Tools > Add-Ins and checked the two addins, and still
got a failure (Can't find project  or library) when launching the .xls file  I
sent.

Would the following work for users  of a forms project I send for general use
(they have various versions of Office, which includes Excel):



Public Sub Auto_Open()
AddIns("Analysis ToolPak").Installed = True
AddIns("Analysis ToolPak - VBA").Installed = True
frmCorrectiveAction.Show
End Sub


Or is it also necessary for them to do something explicitly in VBA? (i.e.,
set up the Project Reference)...