Fatal error: Cannot redeclare class template_func

[drseuss]

My site www.shoppingkingdom.com.au was recently hacked. The hackers put spam type links into the checkout page and order confirmation data. I have applied the security patches, removed the hack links, and reinstalled some of the scripts.
I keep getting this error on my when I retrieve my webpage
Fatal error: Cannot redeclare class template_func in /home/sho14623/public_html/includes/classes/template_func.php on line 68
I've tried 3 lots of back up scripts and I still get the same error. My webpage wont open and its driving me crazy. Does anyone have a simple fix for this?
Here is my full script.
Thanks

<SNIP - file removed by moderator>

[DrByte]

When you did a full compare of all the PHP (and image and html and other) files on your server against your good backup from before June, what differences did you see both in contents of files as well as additional files?

BTW - the problem has nothing to do with template_func.php ... it's merely reporting the problem.
You most likely have a copy of template_func.php in another folder, or have something else added that's causing the whole set of startup scripts to repeat themselves.

[cristaltech]

I have the same error:
Warning: preg_match() [function.preg-match]: No ending delimiter '/' found in \includes\classes\template_func.php on line 27 after I installed the MOD Template changer.

Where do I switch error reporting of or how can I re-edit the code:
include_once(DIR_WS_LANGUAGES . $_SESSION['language'] . '.php');

to stop the error reporting

[DrByte]

... after I installed the MOD Template changer

Sounds like a bug in the addon