[Dirvish] solution for "ERROR: no master configuration file"

[sandra at 3dicom.es]

 Hello everybody. I'm a new user of dirvish and I had this error and
looking for in the code of dirvish.pl I knew that the var CONFDIR was
null, so I've included this line in the beginning:  

 $CONFDIR = "/etc/dirvish";  

 So, it finds the file master.conf and I haven't any error.  

 My question is, ¿is it a good solution?¿or is it a big
mistake?¿can it cause any others problems?  

 Thanks!   
 sandra  
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