Joomla 1.5 Problem isolated: The URL is not valid and cannot be loaded or http:///

If you remember from earlier posts I had started with HTML many years ago, I've updated my HTML knowledge but now I'm learning PHP and Javascript and I'm looking for a way to integrate or at least harmoniously have Wordpress and a CMS on my sites. Wordpress is powerful, and easy to use however it isn't Javascript or external PHP friendly. It also doesn't work with Iframes so that work around isn't available. I have made the comment in the Wordpress website how an integrated IFRAME option for pages would work around many problems and I have my fingers crossed. ;-)

I had tried Drupal but due to several issues including confusing options, overall bad administrative design, and posts that got cut off half way through, I have decided to drop Drupal until I feel like torturing myself.

I had stopped my adventure with CMSs, Content Management Systems, after installing Joomla 1.5 and getting the following error in Firefox:

The URL is not valid and cannot be loaded

I had posted the error in the Joomla forum hoping for an answer and I started working on other projects. I finally realized this morning that I still didn't have a solution so I reposted the error.

I quickly got a reply from a forum moderator to try a nightly install version. I deleted Joomla from the server, downloaded the nightly 1.5 version and uploaded it all into a new folder, /business.

I checked it and I didn't get the error. I was so happy I went into configuring the installation. Joomla has a very nice graphic menu system so I am able to check those settings quickly.

I marked SEO friendly URLs, Modrewrite, and I enabled a few modules that were preinstalled but by default deactivated. I tried again to log in and guess what?

Firefox gave me: The URL is not valid and cannot be loaded

When you get this message you can later click on OK and change settings. IE doesn't let you do anything.

and Internet Explorer gave me http:/// with a white page.

I went back to the admin options and tried changing the normal settings and I disabled all but the Wrapper module.

I got the error again and then I realized I hadn't tried disabling the Wrapper module as it was by default. I did so and the error went away. I went back into the wrapper module and I saw that there is a field in the right 'parameter' column called URL:

The URL field was blank. I don't know what it is supposed to do but I added the URL for my Joomla install. I reactivated the wrapper module and I don't get the error anymore.