[Freeswitch-users] system functions silently ignored

What could cause this? I have a fax script which just stopped working. I see the logs display the complete diaplan which involves the system call, I can manually execute the very command from the cli, but during the call, it just skips the system application and hangups without printing anything in the logs? I even tried something simple like: <action application="system" data="touch /tmp/rxfax"/> Thanks, jlc