Just purchased and installed Pro version Route 66. Am using K2 for all site content. I have enabled plugins: System-Route 66, Route 66-K2, Installer-Route 66 and Route 66-Menus (don't really know what this one is for). Website now not accessible with Error 500 message. Disabling plugins I can access website fine. Not a really techy so my first thought was that I have enabled SSL (HTTPS://sitename.com.) on my site. Tried a redirect 301 from HTTP://sitename.com to HTTPS://sitename.com in .htaccess but that did nothing to resolve the problem. Changed settings for Canonical links and Redirects in all combinations and that did nothing. With my limited knowledge do not know what to try next.