I've installed K2 for the first time, imported all the articles from the default Joomla sample data and trashed all Joomla articles, leaving just K2 items.I've set up my menu items to now use K2 but with Joomla SEF settings enabled, my links aren't working.  Do I need to make any changes to .htaccess?  I've not found any mention of it in the documentation.  Is there a plugin or config setting I need to enable?Thanks!