I've just converted to Office 2007 and have an error when I try to use
Send Mail, with the message "The following Feature cannot be saved in
a macro free workbook" .VB Project. It debugs on the line below

.SaveAs TempFilePath & TempFileName & FileExtStr,
FileFormat:=FileFormatNum

However part of my code prior to this allocates the FileFormat number
to it for Excel 2007, see part below, all via Ron de Bruin. Any ideas?

With Destwb
If Val(Application.Version) < 12 Then
'You use Excel 97-2003
FileExtStr = ".xls": FileFormatNum = -4143
Else
'You use Excel 2007
'We exit the sub when your answer is NO in the security
dialog that you only
'see when you copy a sheet from a xlsm file with macro's
disabled.
If Sourcewb.Name = .Name Then
With Application
.ScreenUpdating = True
.EnableEvents = True
End With
MsgBox "Your answer is NO in the security dialog"
Exit Sub
Else
Select Case Sourcewb.FileFormat
Case 51: FileExtStr = ".xlsx": FileFormatNum = 51
Case 52:
If .HasVBProject Then
FileExtStr = ".xlsm": FileFormatNum = 52
Else
FileExtStr = ".xlsx": FileFormatNum = 51
End If
Case 56: FileExtStr = ".xls": FileFormatNum = 56
Case Else: FileExtStr = ".xlsb": FileFormatNum = 50
End Select
End If
End If
End With