Can't get any sitewide tag plugins to work

I've tried
Tag Posts - http://orlandojewish.com/test/
Tag Feeds - http://orlandojewish.com/wp-content/tag-feed.php?tag=thisisatag
Global Site Tags - http://orlandojewish.com/tags/

I can't get any of them to work.

I have installed and am able to use Post Indexer. I am able to show recent post and can get the recent posts plugin and widget to work.

Thoughts...I'm clearly missing something.

Thanks!