Install problem.

[Nick Geyer]

When I install and configure imp and then try and load up the site
(http://webmail.planetwebspace.com/horde/) the horde interface loads fine
but when I click on the imp I get this error.

Fatal error: Call to undefined function: page_open() in
/usr/home/webmail/webmail.planetwebspace.com/htdocs/horde/imp/mailbox.php3
on line 104

Any ideas what could be causing this problem and how to fix it?

I am running FreeBSD 4.2-Release Latest version of php4 and mysql installed
from BSD ports.

Thanks,

Nick