Try the following:
Option Compare Text
Sub TestSave()
SaveNewWordFile "TestSave2.xls"
End Sub
Sub SaveNewWordFile(ByVal FileNameWord As String)
Dim appWord As Object
Dim fileWord As Object
Dim newWord As String
'Strip/add extension
If Right(FileNameWord, 4) = ".xls" Then
FileNameWord = Left(FileNameWord, Len(FileNameWord) - 4) & ".doc"
Else
FileNameWord = FileNameWord & ".doc"
End If
newWord = ThisWorkbook.Path & "\" & FileNameWord '\ missing here
Set appWord = CreateObject("Word.Application")
appWord.Visible = True
Set fileWord = appWord.Documents.Add
appWord.Selection.Paste
With fileWord 'typo on this line
.SaveAs newWord
.Close
End With
'debug
If Dir(newWord) <> "" Then MsgBox newWord & " saved"
Set fileWord = Nothing
Set appWord = Nothing
End Sub