runtime error 1004 : excel VBA

Question

I keep getting runtime error 1004, on the following line:

originBook.Sheets(1).Range(Cells(1, 1), Cells(lastRow, lastCol)).Copy

Here's the full code

Sub Obtain_Source()

    Application.DisplayAlerts = False

    Dim theOrigin, theString, newCol As String
    Dim lastRow, lastCol As Long
    Dim theRange As Range
    Dim originBook, originBookBackup, macroBook As Workbook
    Dim originOpen As Boolean

    originOpen = False

    Set macroBook = Workbooks("FY_Macro_Testt (DYNAMIC).xlsm")

    theOrigin = Application.GetOpenFilename(fileFilter:="Excel Files (*.xls; *.xlsm; *.xlsx), *.xls' *.xlsm' *.xlsx", _
    Title:="Fiscal Year Selection: Select Only One", ButtonText:="Open", MultiSelect:=False)

    If TypeName(theOrigin) = "Boolean" Then
        MsgBox "Don't just stand there.  Do something." & vbNewLine & _
               "Quit hitting CANCEL.  >.< ", vbExclamation, "WARNING.  CHOKING HAZARD."
    Else
        originOpen = True
        Set originBook = Workbooks.Open(theOrigin)
            lastRow = Range("A65536").End(xlUp).Row
            lastCol = Range("XFD1").End(xlToLeft).Column
            lastCol = originBook.Sheets(1).Cells(1, Columns.Count).End(xlToLeft).Column

        originBook.Sheets(2).Visible = False
        originBook.Sheets(3).Visible = False

        originBook.Sheets(1).Range(Cells(1, 1), Cells(lastRow, lastCol)).Copy
        macroBook.Sheets(1).Cells(6, 1).PasteSpecial
        i = 1000
       Do While 1000 <= 20000
           j = i - 999
            If originBook.Sheets(1).Cells(i, 1).Value <> vbNullString Or _
               originBook.Sheets(1).Cells(i, 1).Value <> "" Then
                originBook.Sheets(1).Range(Cells(j, 1), Cells(i - 1, lastCol)).Copy
               macroBook.Sheets(1).Cells(j + 5, 1).PasteSpecial

            End If
           i = i + 1000
        Loop
       originBook.Sheets(2).Visible = True
       originBook.Sheets(3).Visible = True
    End If

    If originOpen = True Then
        originBook.Close
    End If

End Sub

which one should I change?

Answer 1

Your error will almost certainly be because you are using

originBook.Sheets(1).Range(Cells(1, 1), Cells(lastRow, lastCol)).Copy

instead of, as @ShaiRado pointed out,

originBook.Sheets(1).Range(originBook.Sheets(1).Cells(1, 1), _
                           originBook.Sheets(1).Cells(lastRow, lastCol)).Copy

When they are not fully qualified, Cells references refer to cells on the ActiveSheet . Excel is therefore having to try to copy all the cells on Sheets(1) that lie in the area between two cells on the ActiveSheet . It's equivalent to saying "choose all the houses in Los Angeles that lie in the area between the intersection of E 79th St and 1st Avenue and the intersection of E 86th St and York Ave New York ". (Not living in the USA, I hope that analogy makes sense.)