samba - Mar 2006 - file_set_dosmode (Operation not permitted)

Hi, all

In my log I found:

[2006/03/20 08:08:11, 2] smbd/trans2.c:call_trans2setfilepathinfo(3885)
  file_set_dosmode of Template/Xlstart/Book.xlt failed (Operation not 
permitted)

What does this mean?

Zoran