Excel 2007 VB Run-time Error 9 when running a module

Hello experts.  I'm back with a mental stumbling block.

Have an Excel project that I have created a user Login sheet that when the clerk clicks on an object it runs a module to open a second and third worksheets and copy some data back into the first workbook.  

Problem is when it gets to the line to go back to the original workbook (in this case wb "Machine Money Pull") and go to needed worksheet (ws "Machine Pull") I am getting a Run-Time Error '9' Out of Range.

Below is the code.  I have highlighted where it errors out with a string of ? marks to easily identify (I think)

Sub LoginOpenMachinePullForm()

    Sheets("Login").Select
    Sheets("Machine Pull").Visible = True
    Application.Run "'Machine Money Pull.xlsm'!MachinePullInput"
    
End Sub

*******************************
MODULE8

Sub MachinePullInput()
 ' Retrieve The Last Shift's LVL Totals for Day as of the End of that Shift to copy as values to the ws DataLastShift4MachPull
    '
    Dim wb1 As Workbook, wb2 As Workbook, wb3 As Workbook
    Dim ws1_1 As Worksheet
    Dim ws2_1 As Worksheet
    Dim ws3_1 As Worksheet
    Dim strCopyFromFileInMachineMoneyPull As String, strSaveToFileInMachineMoneyPull As String
    Dim inputRange_ws1_1 As Range
    Dim outputRange_ws2_1 As Range
    Dim LastRowInput_ws1_1 As Long

'    Application.Visible = False

    Dim intResponse As Integer
    intResponse = MsgBox("Are you sure you want to begin a New Machine Money Pull?", vbOKCancel + vbInformation)
    If intResponse = vbOK Then
      'Resume, the user pressed ok
    
' This defaults the Calendar object to today
        Application.Goto Reference:="MachinePullTopofForm"
        Sheets("Machine Pull").Calendar1.Value = Date
'add back        Application.ScreenUpdating = False
        Sheets("Machine Pull").Select
        Sheets("DataLastShift4MachPull").Visible = True
' End of defaults for Calendar object to today

    '~~> wb1 in this instance is the "Machine Money Pull" workbook
        Set wb1 = ActiveWorkbook
        Set ws1_1 = wb1.Sheets("DataLastShift4MachPull")
         
    '~~> Change file path here so I can use a file path workbook to update where files are instead of going to VB code
        '~~> wb3 in this instance is the "FilePaths" workbook which contains the paths
    Set wb3 = Workbooks.Open("C:\Documents and Settings\Bill.BILL_BACKOFFICE\Desktop\BCJ Master Forms\FilePaths.xlsx")
    Set ws3_1 = wb3.Sheets("FilePaths")
    FilePath = ws3_1.Range("E3").Value '<~~ Contains value like C:\Temp\

    
    strCopyFromFileInMachineMoneyPull = FilePath & "Shift Details Data.xlsx"
    strSaveToFileInMachineMoneyPull = "Machine Money Pull.xlsm"
      
    wb3.Close savechanges:=False
    '~~> End Change file path settings
        
        
        '~~> Test if save to workbook is open
        On Error Resume Next
        '~~> This will set wb2 name
            '~~> wb2 in this instance is "Shifts Data Details" workbook
            Set wb2 = Workbooks(Dir(strCopyFromFileInMachineMoneyPull))
            Set ws2_1 = wb2.Sheets("DataLastShift4MachPullTemp")
        
        On Error GoTo 0
        
        If wb2 Is Nothing Then
            Set wb2 = Workbooks.Open(strCopyFromFileInMachineMoneyPull)
            Set ws2_1 = wb2.Sheets("DataLastShift4MachPullTemp")
        
        End If
    
        '~~> Begin Save info
        Set wb2 = ActiveWorkbook
        LastRowInput_ws2_1 = ws2_1.Range("A" & Rows.Count).End(xlUp).Row
        LastRowOutput_ws1_1 = ws1_1.Range("A" & Rows.Count).End(xlUp).Row
        
        Set inputRange_ws2_1 = ws2_1.Range("A5:AC" & LastRowInput_ws2_1)
        Set outputRange_ws1_1 = ws1_1.Range("A" & LastRowOutput_ws1_1)
        
        
        inputRange_ws2_1.Copy
        outputRange_ws1_1.PasteSpecial Paste:=xlPasteValues, Operation:=xlNone, SkipBlanks _
        :=False, Transpose:=False
        Application.CutCopyMode = False
        
    ' Save updated data file then close
        ActiveWorkbook.Save
        ActiveWorkbook.Close
        Application.ScreenUpdating = True
' insert a code to Make Machine pull the active worksheet



*??????????THE FOLLOWING IS WHERE IT HANGS AND GIVES ME A RUN-TIME ERROR '9' Subscript out of range ??????????*
        Set Workbooks("Machine Money Pull") = ActiveWorkbook

        Sheets("Machine Pull").Select
        Application.Goto Reference:="MachinePullTopofForm"
        Sheets("DataLastShift4MachPull").Visible = False
        
        Range("AA21").Select
        Range("Z23").Select
        Application.Goto Reference:="EmployeeSelector"

        Application.ScreenUpdating = True

    Else
      'The user pressed cancel
      'Cancel event
      
    End If
    
End Sub

**************************************************************
FOLLOWING STILL PART OF MODULE8 (But it doesn't look like it uses this one)

Sub Worksheet_SelectionChange(ByVal Target As Range)

End Sub

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