Turning off AutoFilter via VBA does not seem to work for this file.

Hi, i am enclosing a file. When i try to turn off auto filters on this file ......nothing happens.

I used the following code to turn off autofilters but it does not work:

   With Workbooks(wrkbookname1).Worksheets(wrksheetname1)
        If .AutoFilterMode Then .AutoFilterMode = False
    End With

Any ideas why? This file seems different in some way.......any ideas?