Excel VBA Add Reference Library without Closing Userform GUI

Question

I have a script (see below) that loads a Reference Library and then presents the user with a GUI (Userform). The problem is, after loading the library it ends the script. Not immediately after the command (like a crash), but after it finishes running through. In this case it means that the GUI does not show up; however upon rerunning the script (when it does not have to load the reference library because it is already loaded), the GUI shows up fine.
I do not want to have to manually run this script twice every time that I use it, additionally I cannot set up my system to remember this reference library, there are many computers that run this script.
Is there any way of either:

1. suppressing this behavior of ending of the script when it loads a library

2. making the script automatically call itself again after it finishes running through once

   Sub AddReference()
   'Add a reference library to the project using the GUID
   Dim strGUID As String, theRef As Variant, i As Long
   On Error Resume Next
   
   strGUID = "{0002E157-0000-0000-C000-000000000046}"  'GUID for VBA Extensibility 5.3
   
   'Remove any missing references
   For i = ThisWorkbook.VBProject.References.Count To 1 Step -1
       Set theRef = ThisWorkbook.VBProject.References.Item(i)
       If theRef.isbroken = True Then
           ThisWorkbook.VBProject.References.Remove theRef
       End If
   Next i
   Err.Clear
   
   'ThisWorkbook.VBProject.References.AddFromGuid GUID:=strGUID, Major:=1, Minor:=0
   ThisWorkbook.VBProject.References.AddFromFile "C:\Program Files\Common Files\microsoft shared\VBA\VBA6\VBE6EXT.OLB"
   
   Select Case Err.Number
   Case Is = 32813
        'Reference already in use
   Case Is = vbNullString
        'Reference added without issue  
   Case Else
        'An unknown error was encountered, so alert the user
        MsgBox "A problem occurred while loading the reference library!"
        End
   End Select
   On Error GoTo 0
   
   MyGUI.Show
   
   End Sub