TOPIC: VIEW ALL EVENTS LINK

I was just told by a site visitor that the VIEW ALL EVENTS link on my articles are not working. The link address for the link is http://www.scisaca.org/index.php?Itemid=99999 and it gives the visitor the following error: 404 - Component not found. I'm not sure what is causing that. I did recently upgrade to the latest Joomla 1.5 version of DTRegister. Does anyone know what would be causing this?

I am having the exact same issue and I can't find any solution online. Have you solved the issue?