Category in Tabs question for phpbb2

First topic message reminder :

Hi Forumotioners, I have installed this succesfully on my testforum phpbb2 a while ago from tis topic which is in the Tips & tricks section: 
https://help.forumotion.com/t66614-display-your-categories-as-tabs by @Ange Tuteur  but for some reason I have no acces to it anymore..

Now I've tried to install this at my official forum, also phpbb2, but it won't work as it's supposed to.
when I activate the script it shows the tabs correctly but it also stretches the page and pushes the rigth side widgets off the screen for the most part and gives me a horizontal scrollbar at the bottom of the page..

Both forums are phpbb2 and have exactly the same skin, I don't know why this happens or what I can do to make this right.. 
I would love to have this on my official forum because we have so much forums, it would be so helpful to tidy the place up with this awesome script.
For now I have disabled it again because the page looks ugly with that scrollbar and widgets out of sight.

Any help would be much appreciated   

(If needed this is my Offical Forum and my testforum is in my profile)

Bump

Sorry, but I am out of ideas.  Maybe @Ange Tuteur will log in and see this topic.

SLGray wrote:Sorry, but I am out of ideas.  Maybe @Ange Tuteur will log in and see this topic.

I hope so too @SLGray otherwise I have to give up hope this will ever work the way it should be..
Thank you for all your time spent on this topic though, that was very kind of you

I'll keep bumping a few more times and after that I'll give up..

Kind regards,
Tonny

@SLGray can you lock this unsolved so I can come back to it at a later time..?
I'm working on an upgrade to phpbb3 it's long overdue, so maybe I need help for that version in this matter, but for now at my phphbb2 I give up

Kind regards and thanks for all the help provided,
Tonny.

Maybe you should take a look at our new version: ModernBB.

Locked as Requested