The cron jobs that script bin/Cron.sh tries to insert implicitly depends on the platform having Paul Vixie's cron because it use the slash syntax for repeating ranges. Many Unix/Linux platforms use this cron, but not all. I suggest to make this a little more portable. Example: Instead of writing: */20 * * * * $HOME/bin/otrs.GenericAgent.pl >> /dev/null then bite the bullet and do: 0,20,40 * * * * $HOME/bin/otrs.GenericAgent.pl >> /dev/null Yes, I know it looks ugly but it will make OTRS more portable. Lastly not all cron's support the 'crontab filename username' syntax. However they all support the 'crontab filename' syntax meaning that in order to be truly portable you have to change the script so that it MUST be executed as the OTRS user himself, not as root. A small price to pay for portability. Brian