Categories sidebox links quit working.

Categories links return the message "The requested URL /Products was not found on this server"

This site has been extensively customized but was working great for a while until this started for any of the categories sidebox links.

The site name is guideshouse.org. Any ideas to fix this would be greatly appreciated?

And if you turn off the SEO/rewrites do things work correctly? :unsure:

Not sure where to turn off the rewrites?

Afraid I do not know I do not use them and it is not part of Zen Cart ...

It would be something you installed for this ...

Not just sidebox links - any "SEO" links don't work. The standard dynamic style links that are in use work fine, as do hand-entered dynamic links to destinations where the SEO links fail.

There should be an SEO section somewhere in your admin, maybe under Configuration?

No SEO add on has ever been used for the site. There is nothing in the Configuration either.

Zen Cart does not have any native URL rewriting feature. Someone has added an SEO rewriter to the site, or to certain parts of it.

Is it possible to back out whatever SEO rewriter has done to cause this problem? I don't see any modules added to the site that would have done this.

Possible, but you would first have to know which of at least three rewriter mods was installed, so you would be able to find out what files are involved and what SQL to run for db restoration. There should be some switches or settings somewhere in admin so you can turn off the effect at will.