How to debug this VBA code? - vba

Question

I have used the following code to loop through the workbooks in a folder, each of which has multiple worksheets. In total I have 7 workbooks but I am able to copy only 3 workbooks to the summary sheet after that I am getting Run time error:1004 Method 'open' of object 'workbooks' failed. I am new to VBA and don't know how to resolve this issue. Can someone help me to debug this?
Public Sub ConsolidateSheets()
Dim Wb1 As Workbook
Dim Wb2 As Workbook
Dim ws1 As Worksheet
Dim ws2 As Worksheet
Dim ws3 As Worksheet
Dim rng1 As Range
Dim rng2 As Range
Dim rng3 As Range
Dim rngArea As Range
Dim lrowSpace As Long
Dim lSht As Long
Dim lngCalc As Long
Dim lngRow As Long
Dim lngCol As Long
Dim X()
Dim bProcessFolder As Boolean
Dim bNewSheet As Boolean
Dim StrPrefix
Dim strFileName As String
Dim strFolderName As String
Dim strDefaultFolder As Variant
bProcessFolder = (MsgBox("Process a single folder (Yes)," & vbNewLine & "or single file (No)", vbYesNo, "Application Scope: Folder or single File") = vbYes)
bNewSheet = (MsgBox("Extract all data to a single sheet (Yes)", vbYesNo, "Output Format: Single sheet or sheet by sheet collection") = vbYes)
If Not bProcessFolder Then
If Not bNewSheet Then
MsgBox "There isn't much point creating a exact replica of your source file "
Exit Sub
End If
End If
strDefaultFolder = "D:\Tracker"
lrowSpace = 1
If bProcessFolder Then
strFolderName = BrowseForFolder(strDefaultFolder)
strFileName = Dir(strFolderName & "\*.xls*")
Else
strFileName = Application _
.GetOpenFilename("Select file to process (*.xls*), *.xls*")
End If
Set Wb1 = Workbooks.Add(1)
Set ws1 = Wb1.Sheets(1)
If Not bNewSheet Then ws1.Range("A1:B1") = Array("workbook name", "worksheet count")
With Application
.DisplayAlerts = False
.EnableEvents = False
.ScreenUpdating = False
lngCalc = .Calculation
.Calculation = xlCalculationManual
End With
StrPrefix = strFolderName & IIf(bProcessFolder, "\", vbNullString)
Do While Len(strFileName) > 0
Application.StatusBar = Left("Processing " & strFolderName & "\" & strFileName, 255)
Set Wb2 = Workbooks.Open(StrPrefix & strFileName)
If Not bNewSheet Then
ws1.Cells(Rows.Count, "A").End(xlUp).Offset(1, 0) = Wb2.Name
ws1.Cells(Rows.Count, "A").End(xlUp).Offset(0, 1) = Wb2.Sheets.Count
End If
For Each ws2 In Wb2.Sheets
If bNewSheet Then
Set rng2 = ws2.Cells.Find("*", ws2.[a1], xlValues, , xlByRows, xlPrevious)
If Not rng2 Is Nothing Then
Set rng1 = ws1.Cells.Find("*", ws1.[a1], xlValues, , xlByRows, xlPrevious)
If Not rng1 Is Nothing Then
Set rng3 = ws2.Range(ws2.UsedRange.Cells(1), ws2.Cells(rng2.Row, "A"))
If rng3.Rows.Count + rng1.Row < Rows.Count Then
ws2.UsedRange.Copy ws1.Cells(rng1.Row + 1 + lrowSpace, ws2.UsedRange.Cells(1).Column)
Else
MsgBox "Summary sheet size exceeded. Process stopped on " & vbNewLine & _
"sheet: " & ws2.Name & vbNewLine & "of" & vbNewLine & "workbook: " & Wb2.Name
Wb2.Close False
Exit Do
End If
If lrowSpace <> 0 Then ws1.Rows(rng1.Row + 1).Interior.Color = vbGreen
Else
ws2.UsedRange.Copy ws1.Cells(1, ws2.UsedRange.Cells(1).Column)
End If
End If
Else
ws2.Copy after:=Wb1.Sheets(Wb1.Sheets.Count)
With Wb1.Sheets(Wb1.Sheets.Count).Cells
.Copy
.PasteSpecial xlPasteValues
End With
On Error Resume Next
Wb1.Sheets(Wb1.Sheets.Count).Name = ws2.Name
If Err.Number <> 0 Then
Do
lSht = lSht + 1
Set ws3 = Wb1.Sheets(ws2.Name & " " & lSht)
Loop While Not ws3 Is Nothing
lSht = 0
End If
On Error GoTo 0
End If
Next ws2
Wb2.Close False
If bProcessFolder = False Then Exit Do
strFileName = Dir
Loop
If bNewSheet Then
With ws1.UsedRange
.Copy
.Cells(1).PasteSpecial xlPasteValues
.Cells(1).Activate
End With
Else
ws1.Activate
ws1.Range("A1:B1").Font.Bold = True
ws1.Columns.AutoFit
End If
With Application
.CutCopyMode = False
.DisplayAlerts = True
.EnableEvents = True
.ScreenUpdating = True
.Calculation = lngCalc
.StatusBar = vbNullString
End With
End Sub
Function BrowseForFolder(Optional OpenAt As Variant) As Variant
Dim ShellApp As Object
Set ShellApp = CreateObject("Shell.Application"). _
BrowseForFolder(0, "Please choose a folder", 0, OpenAt)
On Error Resume Next
BrowseForFolder = ShellApp.self.Path
On Error GoTo 0
Set ShellApp = Nothing
Select Case Mid(BrowseForFolder, 2, 1)
Case Is = ":"
If Left(BrowseForFolder, 1) = ":" Then GoTo Invalid
Case Is = "\"
If Not Left(BrowseForFolder, 1) = "\" Then GoTo Invalid
Case Else
GoTo Invalid
End Select
Exit Function
Invalid:
BrowseForFolder = False
End Function