gmc application selector problem

[Dan Kortschak <dan kortschak adelaide edu au>]

When I open a file from gmc then dialog to ask which application to use
nearly always comes up empty where originally there was a list of
applications. Why is this and what can I do about it?

thanks
Dan
-- 
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  Dan Kortschak                                          <\/    \_O> O
  Department of Genetics    phone:+61 8 8303 4863         "|'...'.\
  University of Adelaide    fax  :+61 8 8303 4399          '      :\
  Australia 5005            email:dan.kortschak@adelaide.edu.au   : \