I purchased the JoomSEF extension for Wordpress last week, but cannot get it to work at all. I have followed all recommendations I've found in the forum and still nothing works correctly. If permalinks are reset I just get the default and no SEF urls. If permalinks are set to postname, I get 404 errors.

Please Advise ASAP, I am extremely frustrated as is my client that an extension I paid for isn't working at all.

I'm using Joomsef 3.9.2 and CorePHP's Wordpress 3.2.1

Thank you