Unitialized value in pattern match - Error


Thanks for your previous help, I hope you can take a minute to look at
this and help me out as well.

When I click certain places in RT (3.6.3), I see this in my apache error

[Wed Mar 07 08:00:41 2007] [error] [client] FastCGI:
server “/usr/local/rt.phs-hdpr/bin/mason_handler.fcgi” stderr: Use of
uninitialized value in pattern match (m//) at
/usr/local/rt.phs-hdpr/lib/RT/Interface/Web.pm line 1637, line
1662., referer: http://phs-hdpr.webreachinc.com/Search/Build.html

The only problem I see with the system (besides the error in the log) is
that the “^” “v” “<” and “>” don’t show up in the ticket query page. The
error above happens when clicking in different places throughout the
system, but it always happens when you click on “Tickets” to begin a new
ticket search.

thank you