meta tag generator - Joomla! Forum - community, help and support

i have tried couple different seo extensions joomla site now, , can't 1 work well.  site large, mosets tree directory thousands of pages.  tried use sh404, keep running errors , problems links not working, or fatal cache errors.  have sh404 disabled.  installed joomseo, says on admin page wouldn't work pages generated in component (such mosets tree) , works in joomla static pages, guess extension won't work either.  without seo extension, can't seem meta tags stick.  create metadescription , keywords in backend of joomla (on meta info tab on right side of screen), when go view page, doesn't reflect changes.  pages seem use default home page meta info.  so, have 2 questions:

1) how meta tags save , show on pages (when view source code in browser)?

2) there joomla extension out there can handle such large site mosets tree?  don't care url's, concerned meta tags (title, description, keywords). 

i'm shamelessly keeping 1 alive.  c'mon guys.  metatags of important aspects of web marketing.  there has solution this.