I am new to VBA and trying to make a copy from ws to wscsv and save the latter as .csv file. The following is my sub routine.
I am encountering:
run-time error 1004: Application undefined
at this line:
ActiveWorkbook.SaveAs Filename:=savedirectory, FileFormat:=xlCSV, ConflictResolution:=Excel.XlSaveConflictResolution.xlLocalSessionChanges  
csvworkbook = ActiveWorkbook.Name
My Code
Sub AddNewWorkbook1(ws As Worksheet)
  ws.Activate
  MsgBox ("adding new workbook for" & ws.Name)
  Dim wscsv As Excel.Workbook
  Dim savedirectory As String
  Dim currentworkbook As String
  Dim csvworkbook As String
  currentworkbook = ws.Name
  savedirectory = '/Users/Desktop/Magnum/' & currentworkbook
  Dim lrow As Long
  lrow = Columns("A").End(xlDown).Row
  Workbooks.Add
  DisplayAlerts = False
  ActiveWorkbook.SaveAs (Filename:=savedirectory, FileFormat:=xlCSV, ConflictResolution:=Excel.XlSaveConflictResolution.xlLocalSessionChanges)
  csvworkbook = ActiveWorkbook.Name
  Set wscsv = ActiveWorkbook
  MsgBox ("Entering copying")
  ws.Range(ws.Cells(2, 1), ws.Cells(lrow, 4)).Copy
  wscsv.Sheets(1).Range("A1").PasteSpecial xlPasteValues
  ws.Range(ws.Cells(2, "H"), ws.Cells(lrow, "H")).Copy
  wscsv.Sheets(1).Range("E1").PasteSpecial xlPasteValues
  ws.Range(ws.Cells(2, "E"), ws.Cells(lrow, "E")).Copy
  wscsv.Sheets(1).Range("F1").PasteSpecial xlPasteValues
  ws.Range(ws.Cells(2, "I"), ws.Cells(lrow, "I")).Copy
  wscsv.Sheets(1).Range("G1").PasteSpecial xlPasteValues
  lrow = wscsv.Sheets(1).Columns("A").End(xlDown).Row
  wscsv.Sheets(1).Range(wscsv.Sheets(1).Cells(2, 1),    wscsv.Sheets(1).Cells(lrow, 1)).NumberFormat = "mm/dd/yyyy"
  wscsv.Sheets(1).Range("A1").Value = "Date"
  wscsv.Sheets(1).Range("B1").Value = "open"
  wscsv.Sheets(1).Range("C1").Value = "high"
  wscsv.Sheets(1).Range("D1").Value = "low"
  wscsv.Sheets(1).Range("E1").Value = "close"
  wscsv.Sheets(1).Range("F1").Value = "volume"
  wscsv.Sheets(1).Range("G1").Value = "cap"
  wscsv.Save
  wscsv.Close
  MsgBox ("Copying complete")
  End Sub
				
                        
Could you try this way? It worked for me.