I have recently installed your guestbook on my site (www.krishnazine.com/GuestBook). The site is still under construction, But I was testing this guestbook.

While signing the guest book, Very often, I am getting the message: "One of the input fields does not seem to be valid.", though the fact is that all my entries are valid.

And While in the Administration Panel, When I choose the "templates" option, The browser's progress bar (Which shows how much of the page is loaded) moves half way, and then it seems to stay there forever. The template page never loads.

Are these known issues? How do I go about solving them?
I have installed Advanced Guestbook from CPANEL (Control Panel for my website) provided by my webhost. The version of advanced Guestbook I have is 2.3.3

Please help me with this.