[otrs] Cron Jobs on Solaris 10

Hi ALL, I have otrs 2.4.7 running on Postgresql 8.3.7 and Solaris 10. I have configured the cron scripts in $OTRS_HOME/var/cron. But when I execute $./Cron.sh start otrs, I get the error "./Cron.sh: -: does not exist"; what could this be? Rgds Michael