[Koha] Zebra rebuild running in crontab script?

Has anyone experienced a problem running rebuild_zebra.pl in a sh script running in crontab? The rebuild_zebra doesn't delete or update the existing index (I'm using the -r switch) and if I manually delete the index files through the script the rebuild_zebra doesn't recreate them. If I run the rebuild_zebra script manually it runs successfully and recreates the index files. James Winter Arcadia University <http://www.arcadia.edu/> Systems Manager 215.517.2588 winterj@arcadia.edu <mailto:winterj@arcadia.edu>