Excel process left after vbs script - excel

Question

I am running a batch file which calls a vbs script to open a workbook, execute a macro (which calls several subs and functions), creates an email and displays it, saveas a version of the workbook, and then close down the workbook and close down the process.
For some reason after execution, the workbook will close, but I will still have a blank excel process running regardless of what I do. Everything else is working fine aside from the lone process that gets stuck running. How do I get rid of the ghost instance I end up with? Why am I getting stuck with an excel process?
Batch Script Calling the VBS Process:
cscript update.vbs "C:\Test\Batch\AutoUpdate\Summ.v1.xlsm"
VBScript:
Dim args, objExcel
Set args = WScript.Arguments
Set objExcel = CreateObject("Excel.Application")
objExcel.Workbooks.Open args(0)
objExcel.Visible = True
objExcel.Run "NewRunAll"
objExcel.ActiveWorkbook.Save
objExcel.ActiveWorkbook.Close
objExcel.Quit
set objExcel = Nothing
WScript.Quit
VBA Save Down Process in Book :
Public Sub SaveDownBook()
'Saves down a copy of the entire workbook
Dim filePath As String, fileName As String
Application.DisplayAlerts = False
Application.ScreenUpdating = False
On Error GoTo saveDownBook_bailOut
filePath = Sheet7.Range("copy_filepath").Value
fileName = Sheet7.Range("historical_filename").Value
ThisWorkbook.SaveCopyAs (filePath + fileName)
ActiveWorkbook.Close
saveDownBook_bailOut:
Application.DisplayAlerts = True
Application.ScreenUpdating = True
If Err.Number <> 0 Then
MsgBox ("Error Description: " + Err.Description)
MsgBox ("Error Number: " + Err.Number)
End If
End Sub