Documents.open affecting macro functionality? - vba

Question

I have created a simplistic menu in word that opens a number of word files with various macros built in. Some of the macros function as normal when opened via the menu (e.g. forms that are showed on Private Sub Document_Open), but others (code to ignore warnings about saving in a macro free environment) are ignored.
Other issues, such as a debug errors about Word being 'unable to fire event', also seem to be occurring, but only when the files are opened via the menu. All the menu does is use Documents.Open and open the file.
When users open the file without the menu, no issues occur (no warnings about saving in a macro free environment, no errors about firing events).
Any help would be appreciated! I would prefer to not have to scrap the menu entirely for usability, as there are quite a few files that the menu serves as an index for.
Code below:
If ComboBox1.Text = "- Full title page" Then
Documents.Open ("A:/Workgroup Documents/Folder 1/templates/name of file.docm")
End If
Code from document that is opened (ThisDocument module):
Private WithEvents App As Word.Application
Option Explicit
Dim sDocName As String
Dim kcsval As String
Private Sub Document_Open()
frmFooters.Show
Set App = Word.Application
CATform.Show
On Error Resume Next
Documents("J:\Workgroup Documents\Edited Transcript\templates\menu.docm").Close SaveChanges:=wdDoNotSaveChanges
FixSaveError
End Sub
Then some forms, and a module and class module that deal with the save error. Module:
Option Explicit
Dim MyClass As New Class1
Sub FixSaveError()
Set MyClass.App = Word.Application
End Sub
Class module (Class1):
Public WithEvents App As Word.Application
Private Sub App_DocumentBeforeSave(ByVal Doc As Document, _
SaveAsUI As Boolean, Cancel As Boolean)
Application.DisplayAlerts = wdAlertsNone
ActiveDocument.Save
Application.DisplayAlerts = wdAlertsAll
End Sub
The module and class module function purely to remove the warning message about saving in a macro-free environment when saving as docx from docm.
The forms that open up on Document_Open function fine, if it gets that far (the 'error firing event' error sometimes stops it getting there, but only sometimes and only on some machines - and only when using the menu to open the files).