I installed Ultimate SEO Url's tonight and first off got a 500 error on my website and also on the admin. Changed Rewrite Engine to Off and now my homepage and admin work but any other page on my website gets a 404 error. I tried changing all the setting on the plugin in the admin but my site only works if I change the Enable SEO Urls to off. Not sure what I did wrong or what code I didn't add to .htaccess. I didn't previously have a .htaccess for my site because it is pretty new and I wanted to get the plugin's installed before I add all the security functions. This is my website maybe you could spot something http://www.luckylaketackle.com. Any help would be greatly appreciated. Thank you so much for your help.