/opt/FAXserver/bin/asciitiffto render the cover sheet.
In order for asciitiff to operate correctly, the font server needs to be running and the necssary fonts need to be available.
Checking your log file can frequently provide information on why asciitiff has failed.
You may also run asciitiff manually in trace mode to observe any problems.
ls -l / > text
See also Check the Font Server.