When adding comments to a 'Page' and posting it, I get a blank page, and if fails to add the comment to the 'Page'.
The comments do however work with both images and articles.

I get the following error in my apache log, when posting:

[client 192.168.21.25] PHP Fatal error: Call to a member function on a non-object in /var/www/zenphoto/zp-core/functions-controller.php on line 159, referer: http://www.svendsen-net.dk/pages/GuestBook

ZenPhoto ver. SVN 3604, PHP version: 4.3.9, MySQL version: 4.1.22
With minor modifications to the 'zenpage-default' theme (adding user logout into breadcrumb)

R:Martin

Got it. This will be fixed in tonight's build.