Hello Neal,

You are facing different issues. The solution posted for Fred was for reserved words in menu items.

A 3rd party extension appears to add ?Itemid=158 in your URLS which causes the 404 error.
Possibly it is a misconfiguration of an SEO/SEF extension.

Yes, this is added by Artio JoomSEF. But it's also added on all other pages as well, and they are not getting a 404 error.

If anyone has other ideas, please let me know.

Thanks,
Neal

If Artio JoomSEF does not support K2 then your links will continue to break. I think you need to ask the extension's developers about your issue.

Artio sells a JoomSEF K2 Extension for Joomla 2.5 and older at 10 Euro.

I have had a great experience with JoomSEF & Joomla 1.6 up to Joomla 2.5. It seems my best option is investing 10 Euro in this to get good K2 URLs.

Does anyone use another SEO extension for K2 that is 1: Free or 2: available for Joomla 2.5 & 3.x?

PS: Fred, I like your website, but you would probably benefit from JoomSEF with that K2 Extension. It should eliminate the Joomla article ID number that preceeds every URL that's being generated, giving you simpler URLs anyone can easily remember or type.