Can't auto-link at single page with Simple Tags

I installed Simple Tags Version 2.1.1 and set on to ‘Auto links tags’.
The tag-word on homepage could be linked,
but could not on other page (http://hogehoge?cat=1 ,http://hogehoge?p=1, etc) .

(My catedogy.php, tag.php and archive.php were made by copy from index.php)

What I’m doing wrong?

http://wordpress.org/extend/plugins/simple-tags/