Installation Issue - Long URL when using Wordpress on same server

Hey,

I have installed Omeka and nearly everything works perfectly. I am only having a problem obtaining a simple URL. I would like to obtain www.mydomain.com/my_omeka_project but I get instead
www.mydomain.com/websites/my_web_host/LinuxPackage24/my/do/ma/mydomain.com/public_html/my_omeka_project

I know this issue comes from the fact I have Wordpress installed on the same server (www.mydomain.com/wordpress) because I have already installed omeka on another server without wordpress and eerything works perfectly.

I have had a look at the different threads on the forum and know that this might come from the different .htaccess used on my server (the first one is www.mydomain.com/.htaccess and the second one is www.mydomain.com/my_omeka_project/.htaccess)

Do you know where this could come from?

Thanks a lot for your help.

Bixente