I'm on the same page as Hunabku. I can't find this module and am at a loss. I had installed Header Tags before this contribution so I'm not sure if that is a problem. I did read this in the instructions:
"By default the file sts_user_code is included, but if you don't use any placeholder defined inside this file, just remove it from the list. In the other hand, if you add a contribution which add some new placeholders, like the famous header tags controller, then you only need to add the file in the list. The files must be separated by semicolons."
But I'm really not sure what that means. I'm sure there's probably an easy answer out there. Can anyone post a link or some instructions? Thanks.