2501 Error Out put to Canceled

[DJRhino1175]

I get the 2501 error stating that the Out put to was canceled without anyone cancelling it. I go to debug and it points to lines 21 and 22.

I do not have any issues running this on my PC, but I have a user that gets this every time he try's to run this code.
I gave his PC full control of the folder the database is in thinking it was a rights issue but that did not help either.

Option Explicit
Option Compare Database
 
Private Sub btnMail1_Click()
 
Dim strEMail As String
Dim oOutlook As Object
Dim oMail As Object
Dim strAddr As String
Dim MyDB As DAO.Database
Dim rstEMail As DAO.Recordset
Dim strReportName As String
 
Set oOutlook = CreateObject("Outlook.Application")
Set oMail = oOutlook.CreateItem(0)
 
strReportName = "New ECN Report"
 
gstrFilter = "[ECNID]=" & Me.ECNID
 
DoCmd.OutputTo acOutputReport, "rptECN", acFormatPDF, CurrentProject.Path & _
               "\" & strReportName & ".pdf", , , , acExportQualityPrint
 
'Retrieve all E-Mail Addressess in tblEMailAddress
Set MyDB = CurrentDb
Set rstEMail = MyDB.OpenRecordset("Select * From tblEMail", dbOpenSnapshot, dbOpenForwardOnly)
 
With rstEMail
  Do While Not .EOF
    'Build the Recipients String
    strEMail = strEMail & ![EmailAddress] & ";"
      .MoveNext
  Loop
End With
'--------------------------------------------------
 
With oMail
  .To = Left$(strEMail, Len(strEMail) - 1)        'Remove Trailing ;
  .Body = "Please review the attached ECN and complete any and all tasks that pertain to you."
  .Subject = Replace(Replace("ECNID |1: |2", "|1", Nz([ECNID], "")), "|2", Nz([NewPN], ""))
    .Display
  .Attachments.Add CurrentProject.Path & "\" & strReportName & ".pdf"
 
End With
 
Set oMail = Nothing
Set oOutlook = Nothing
 
rstEMail.Close
Set rstEMail = Nothing
 
Dim aFile As String
aFile = "M:\Unsecure Share\New ECN System\New ECN Report.pdf"
If Len(Dir$(aFile)) > 0 Then
     Kill aFile
End If
End Sub