Philippe,

I had the same problem.
The cause on our system was the following:
In the perl-script the following check was made :
........
  # First, check to see if search produced an error
   chop;
   if ($_ eq "err: no results")
   {&search_error("There were no items that matched your search request");}
.......

When the last indexfile (eg. -f indexfile1 indexfile2) contains zero occurences of the search string (indexfile2), the above mentioned script will stop further actions of the script.
So the hits found in the first document (indexfile1) will not be shown.

I commented out the above mentioned code and now the results of all indexfiles, even when some are empty, are displayed.

Kind Regards,

Patrick Dooms
pdooms@emt.ie.philips.nl
CAD Support
Philips EMT