[OS X TeX] Beamer

[Itamar Francez]

Hi, I am trying to compile a file with a beamer presentation, and I  
got the following message:

No file AC-07-talk-wrk.nav

(my filed is called AC-07-talk-wrk)
I suspect this has to do, as usual, with me not putting the right  
files in the Tex folder on my home directory -- does anyone know what  
the missing file is?
thanks, Itamar.
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