VBA, Looping directory with calculation Error.

Hi Guys,

Currently my macro opens all files in my directory , does a calculation, then closes but I am getting an error after they have been closed.
The 'Application.Calculation =xlCalculationAutomatic' Part is where I get the error. (at the bottom)

Any ideas on how to fix?

Code:

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Sub LoopAllExcelFilesInFolder()

'PURPOSE: To loop through all Excel files in a user specified folder and perform a set task on them




Dim wb As Workbook
Dim myPath As String
Dim myFile As String
Dim myExtension As String
Dim FldrPicker As FileDialog


'Optimize Macro Speed
  Application.ScreenUpdating = False
  Application.EnableEvents = False
  Application.Calculation = xlCalculationManual


'Retrieve Target Folder Path From User
  Set FldrPicker = Application.FileDialog(msoFileDialogFolderPicker)


    With FldrPicker
      .Title = "Select A Target Folder"
      .AllowMultiSelect = False
        If .Show <> -1 Then GoTo NextCode
        myPath = .SelectedItems(1) & "\"
    End With


'In Case of Cancel
NextCode:
  myPath = myPath
  If myPath = "" Then GoTo ResetSettings


'Target File Extension (must include wildcard "*")
  myExtension = "*.xls"


'Target Path with Ending Extention
  myFile = Dir(myPath & myExtension)


'Loop through each Excel file in folder
  Do While myFile <> ""
    'Set variable equal to opened workbook
      Set wb = Workbooks.Open(Filename:=myPath & myFile)
   






    Dim xrng As Range, lrw As Long, lrng As Range, i As Long
    Dim LstCo As Long, ws As Worksheet




    With Application
        .ScreenUpdating = False
        .Calculation = xlCalculationManual
    End With


    For Each ws In ActiveWorkbook.Worksheets
        With ws


            If Not Application.WorksheetFunction.CountA(.Cells) = 0 Then


                LstCo = .Cells.Find("*", , xlValues, xlWhole, xlByColumns, xlPrevious, False).Column
                For i = 1 To LstCo
                    With .Columns(i)
                        .TextToColumns Destination:=.Cells(1, 1), DataType:=xlDelimited, TrailingMinusNumbers:=True
                    End With
                Next


                lrw = .Columns("A:Y").Find("*", , xlValues, , xlRows, xlPrevious).Row
                Set lrng = .Range("A" & lrw + 2)


                With .Range("A2:A" & lrw)
                    lrng.Formula = "=COUNTA(" & .Address(0, 0) & ")/ROWS(" & .Address(0, 0) & ")"
                End With




                Set xrng = .Range(lrng, .Cells(lrng.Row, LstCo))




                lrng.AutoFill xrng, Type:=xlFillDefault
                xrng.Style = "Percent"
            End If
        End With
    Next
   
    With Application
        .ScreenUpdating = True
        .Calculation = xlCalculationAutomatic
    End With




   
    'Save and Close Workbook
      wb.Close SaveChanges:=True


    'Get next file name
      myFile = Dir
  Loop


'Message Box when tasks are completed
  MsgBox "Task Complete!"


ResetSettings:
  'Reset Macro Optimization Settings
    Application.EnableEvents = True
    Application.Calculation = xlCalculationAutomatic
    Application.ScreenUpdating = True


End Sub

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Any help would be appreciated.