Weblinks issue?

Using web links is causing me problems. I add a web link and it is stored with no problem. However, when I click on the link on the frontend, the url looks like this:
What is this all about?

I have sh404sef set to SKIP the flexicontent component. What's weird is that the same version of flexicontent works fine on one site, but is full of errors on another site. Both sites are running the same version of Joomla, both are running sh404sef, both are running the same version of Flexicontent. (right now I have them both at 1.5.2 stable)

I updated the problem site to 1.5.3c and it didn't fix the problem. So I went back to 1.5.2.

Also, I have the following errors on the Directory menu page:

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/YOURDOMAINHERE/public_html/libraries/joomla/database/database/mysql.php on line 344
FLEXI_ITEM

Warning: Invalid argument supplied for foreach() in /home/YOURDOMAINHERE/domains/public_html/components/com_flexicontent/views/flexicontent/tmpl/default_categories.php on line 62

When I say "Directory page", i mean when I click on the mainmenu and add a link to the Directory page like in the attachments below.[attachment=1:mk80it9t]<!-- ia1 -->flexi-directory.jpg<!-- ia1 -->[/attachment:mk80it9t]
[attachment=0:mk80it9t]<!-- ia0 -->flexi-directory2.jpg<!-- ia0 -->[/attachment:mk80it9t]

And I have created menu items linking to an individual item and a single category with no errors at all.

I know there must be something I'm missing because it's been a while between the install of Flexicontent on the first working site, and the install of Flexicontent on the 2nd non-working site.

when you desactived sef does it work ?