Can't create new message

Barry M Katz
Tue, 13 Nov 2001 06:55:34 -0800

One of the teachers can't post a new message from his home computer because
of an error:

Sorry! There was an error: Can't evaluate the expression because the name
"referer" hasn't been defined. The error was detected by Frontier 7.0.1 in

This only happens from 1 computer.

Any suggestions?