Deleting VB Components in Destination WB if not Found in Source WB - vba

Question

I'm writing a procedure to update the components in one macro-enabled Excel workbook (Destination) from another macro-enabled Excel workbook (Source). The end result is to make the Destination components (worksheets, user forms, modules, etc.) match the Source components.
So far I have successfully (1) Added components from source that are not found in destination, (2) Replaced worksheet(s) with newer versions, (3) Globally updated the code in all modules, class modules and user forms, and (4) Updated miscellaneous cell formulas and values in various worksheets.
Where I have been struggling is deleting components in destination that are not found in source. I've been trying all kinds of approaches and believe I'm close but can't get past various errors in the actual VBComponents.Remove line. Here's my code:
Sub UpdateDest()
'Purpose:
'Sources: (1) https://www.excel-easy.com/vba/examples/import-sheets.html
' (2) https://stackoverflow.com/questions/16174469/unprotect-vbDestProject-from-vb-code
' (3) https://stackoverflow.com/questions/18497527/copy-vba-code-from-a-sheet-in-one-workbook-to-another
'=== Declare Variables
Dim booCompFound As Boolean
Dim cmSrc As CodeModule, cmDest As CodeModule
Dim xlWBDest As Excel.Workbook, xlWSDest As Excel.Worksheet
Dim xlWBSrc As Excel.Workbook, xlWSSrc As Excel.Worksheet
Dim i As Integer, j As Integer
Dim lngVBUnlocked As Long
Dim vbDestComp As Object, vbDestComps As Object, vbDestProj As Object, vbDestMod As Object
Dim vbSrcComp As Object, vbSrcComps As Object, vbSrcProj As Object, vbSrcMod As Object
Dim modModule As Object
Dim strDestName As String, strDestPath As String, strSrcName As String, strSrcPath As String
Dim strUpdName As String, strUpdPath As String
'On Error GoTo ErrorHandler
'=== Initialize Variables and Prepare for Execution
Application.ScreenUpdating = True
Application.DisplayAlerts = True
strUpdPath = ThisWorkbook.Path & "\"
'=== (Code execution)
'--- Select Dest and source workbooks for the update, and remove workbook, worksheet and VBA Project protection from both
strSrcPath = Application.GetOpenFilename(Title:="Select SOURCE workbook for the update", FileFilter:="Excel Files *.xls* (*.xls*),")
If strSrcPath = "" Then
MsgBox "No source workbook was selected.", vbExclamation, "Sorry!"
Exit Sub
Else
Set xlWBSrc = Workbooks.Open(strSrcPath)
UnprotectAll xlWBSrc
'For Each xlWSSrc In xlWBSrc.Worksheets
' xlWSSrc.Visible = xlSheetVisible
'Next xlWSSrc
Set vbSrcProj = xlWBSrc.VBProject
lngVBUnlocked = UnlockProject(vbSrcProj, "FMD090")
Debug.Print lngVBUnlocked
If lngVBUnlocked <> 0 And lngVBUnlocked <> 2 Then
MsgBox "The source VB Project could not be unlocked.", vbExclamation, "Error!"
Exit Sub
Else
Set vbSrcComps = vbSrcProj.VBComponents
End If
End If
strDestPath = Application.GetOpenFilename(Title:="Select DESTINATION workbook to update", FileFilter:="Excel Files *.xls* (*.xls*),")
If strDestPath = "" Then
MsgBox "No destination workbook was selected.", vbExclamation, "Sorry!"
Exit Sub
Else
Set xlWBDest = Workbooks.Open(strDestPath)
UnprotectAll xlWBDest
'For Each xlWSDest In xlWBDest.Worksheets
' xlWSDest.Visible = xlSheetVisible
'Next xlWSDest
Set vbDestProj = xlWBDest.VBProject
lngVBUnlocked = UnlockProject(vbDestProj, "FMD090")
Debug.Print lngVBUnlocked
If lngVBUnlocked <> 0 And lngVBUnlocked <> 2 Then
MsgBox "The destination VB Project could not be unlocked.", vbExclamation, "Error!"
Exit Sub
Else
Set vbDestComps = vbDestProj.VBComponents
End If
End If
'--- Add components from source that are not found in destination
For Each vbSrcComp In vbSrcComps
Debug.Print vbSrcComp.Name
booCompFound = False
For Each vbDestComp In vbDestComps
If vbSrcComp.Name = vbDestComp.Name Then
booCompFound = True
Exit For
End If
Next vbDestComp
If booCompFound = False Then
Application.EnableEvents = False
vbSrcComp.Export strSrcPath & vbSrcComp.Name
vbDestComps.Import strSrcPath & vbSrcComp.Name
Kill strSrcPath & vbSrcComp.Name
Application.EnableEvents = True
End If
Next vbSrcComp
'--- Delete components in destination that are not found in source
Set vbDestComps = vbDestProj.VBComponents
For i = vbDestComps.Count To 1 Step -1
'For Each vbDestComp In vbDestComps
booCompFound = False
For Each vbSrcComp In vbSrcComps
Debug.Print "Src: "; vbSrcComp.Name; " Dest: "; vbDestComps(i).Name
If vbDestComps(i).Name = vbSrcComp.Name Then
booCompFound = True
Exit For
End If
Next vbSrcComp
If booCompFound = False Then
Application.EnableEvents = False
'>>> PROBLEM LINE
vbDestProj.VBComponents.Remove vbDestComps(i)
'<<<
Application.EnableEvents = True
End If
'Next vbDestComp
Next i
'--- Replace worksheet(s) with newer versions
strUpdName = "Lists_WS_3_1.xlsx"
If Dir(strUpdPath & strUpdName) <> "" Then
Application.EnableEvents = False
Set xlWBSrc = Workbooks.Open(strUpdPath & strUpdName)
xlWBDest.Worksheets("Lists").Visible = xlSheetVisible
Application.DisplayAlerts = False
xlWBDest.Worksheets("Lists").Name = "Lists_Old"
xlWBSrc.Worksheets("Lists").Copy After:=xlWBDest.Worksheets("FYMILES")
xlWBDest.Worksheets("Lists_Old").Delete
xlWBSrc.Close
Application.EnableEvents = True
Else
MsgBox "The file " & strUpdName & " is missing.", vbExclamation, "File Missing!"
Exit Sub
End If
'--- Globally update code in modules, class modules and user forms
For Each vbSrcComp In vbSrcComps
Set cmSrc = vbSrcComp.CodeModule
Debug.Print vbSrcComp.Name
Set cmDest = vbDestComps(vbSrcComp.Name).CodeModule
If cmSrc.CountOfLines > 0 Then
Application.EnableEvents = False
cmDest.DeleteLines 1, cmDest.CountOfLines 'Delete all lines in Dest component
cmDest.AddFromString cmSrc.Lines(1, cmSrc.CountOfLines) 'Copy all lines from source component to Dest component
Application.EnableEvents = True
End If
Next vbSrcComp
'--- Update miscellaneous cell formulas and values
Application.EnableEvents = False
xlWBDest.Sheets("Inventory Data and July").Range("E2").Formula = "=TEXT(Lists!$O$5, " & Chr(34) & "000" & Chr(34) & ")"
Application.EnableEvents = True
'=== Error Handling
ErrorHandler:
Application.EnableEvents = True
'=== Release Variables and Cleanup
Application.ScreenUpdating = True
Application.DisplayAlerts = True
End Sub
The problem code is about 2/3rds of the way down following '>>> PROBLEM LINE. This line of code produces a run-time error 5, invalid procedure call or argument when attempting to delete the Sheet18 code module.
During the run the original Sheet16 (Lists) is removed and replaced with a new Lists worksheet that Excel numbers Sheet18. After a weekend of contemplation I believe the issue stems from component naming. Attempting to address this, the code references the component names, but VB Properties for the new sheet are (Name) = (Sheet18) and Name = Lists (note the parentheses).
I've now tried saving the workbook following each operation without any change in the error or on what part of the structure the error occurs.
As it is currently written I'm looping backward through the destination components collection and attempting to delete when a component in Destination isn't found in Source. Commented out are the remnants of the original forward loop that also didn't work. I've tried many variations and either get an invalid procedure call or that the property or method isn't found in the object.
I've spend a day playing with this. Please take a look and help me see the light!
I'm running Excel 2016

Answer 1

Following on # Comintern's comment, I added tests to ensure the Remove method was only applied to non-document modules. This is the rewritten code block for removing the modules:
'--- Delete non-document components in destination that are not found in source
Set vbDestComps = vbDestProj.VBComponents
For Each vbDestComp In vbDestComps
If vbDestComp.Type >= 1 And vbDestComp.Type <= 3 Then
booCompFound = False
For Each vbSrcComp In vbSrcComps
Debug.Print "Src: "; vbSrcComp.Name; " Dest: "; vbDestComp.Name; " Type: "; vbDestComp.Type
If vbDestComp.Name = vbSrcComp.Name Then
booCompFound = True
Exit For
End If
Next vbSrcComp
If booCompFound = False Then
Application.EnableEvents = False
vbDestProj.VBComponents.Remove vbDestComp
Application.EnableEvents = True
End If
End If
Next vbDestComp