I install addon_documents and i have this on first page

Fatal error: Call to undefined function template_header() in /usr/server/my domain/inc/inc_header.php on line 292


please HELP

i found this file addon documents comes whith this file "inc_header.php" and i replace whith old inc_header.php and don't have this error but...
i dont know if i lost something or not


please answer

Read the info in the downloads.
Dont copy that file if you're using 3.8.1

With this addon you'll be able to create a documentation like here in MemHT.com

ATTENTION: DO NOT UPLOAD THE FILE inc/inc_header.php ON MEMHT PORTAL 3.6.5 AND LATER

"Readme" files are there to be read by people

===================================================
Copyright (c) 2007 by Miltenovik Manojlo
http://www.memht.com

License:
Creative Commons Attribution-ShareAlike 3.0 License
http://creativecommons.org/licenses/by-sa/3.0/
===================================================
-- MemHT Documents --
===================================================
Attention:
---------------------------------------------------
Backup always your files and database before
installing new addons!

===================================================
Installation:
---------------------------------------------------
» Copy all files in your site root:

root/admin/*
root/images/*
root/inc/*
root/pages/*

» Execute
root/pages/documents/install.php




This is all redme file
» Delete
root/pages/documents/install.php

http://www.memht.com/download_file_166_MemHT-Documents.html

The descriptions is pretty clear

The readme doesn't mention not to install the inc/inc_header.php if it's 3.6.5 or greater but the download section does.

But it's written in the file description in the downloads page