Cacti main page not loading after cacti-plugin bad patch

[atamit]

Hi,

I was trying to add thold to my cacti configuration but after a bad page install I cannot load Cacti login now.
The tut I followed is here : http://www.perdichizzi.net/?p=175
I did backup the sql, although it helps me none at the moment.
I reached as far as "mysql cacti < cacti-plugin-arch/pa.sql" as the names may vary in my config and then everything got broken

The error it throws is :

PHP Fatal error: Cannot redeclare do_hook() (previously declared in $path/cacti/lib/plugins .php:5) in /$path/lib/plugins.php on line 387
"

I reverted the patch, still the browser shows an blank page.

Ideas ?