URL Filter doesn't work easily

I'm using Drupal 6.14. In all of my Input Format configurations, I have checked: HTML Corrector, HTML Filter, Inline Images, URL Filter.
For both Filtered HTML and Full HTML, URL Filter is the first in the arrangement.

Yet, the URL's and email addresses I've posted within several of my content types are still not hyperlinked. They show up, they just don't link anywhere. I am using BUEditor for Pages and Stories, so users can use the link icon to make the links.

But I have several custom content types, with website and email fields and they don't turn into hyperlinks when published.

I have read so many other forum topics, many saying to use Web Links, which I uploaded and enabled but nothing links.

If checking "URL Filter Turns web and e-mail addresses into clickable links" doesn't work on its own, why is it there? Why do we have to use another module to get a core module to work?

I cannot find a definitive answer on how this works or even the fact that it doesn't work. Any help you can give would really be appreciated. Some days I love Drupal more than the sun. All the other days, not so much. hahaha