UBB.Developers Forums UBB.threads 7 Development How Do I? Style template ends in middle of page

Please help! Im really clueless..

The Styles Templates page on my control panel somehow ends at the 'Header Insert' textarea.. in that textarea it shows the rest of the page in plain html!
So i looks like this

I cant edit the template anymore because i cant reach the Update styles-button.
..But the main prob is that my forum is now unavaiable it only shows a blank page and a scrollbar.

It happened when i tried to edit the forum_summary.pl and add a iframe.. i then put back my backup but even that didnt help.

Anyone who can help ? Thanks a lot!
Im using UBB 6.1.0.4

Aha got it fixed.. i put this piece of Style

A, A:LINK {
text-decoration : none;
}
A:ACTIVE, A:HOVER, A:FOCUS {
text-decoration : underline;
color : white;
}
A:VISITED {
color : #B3B3B2;
}

after this one

body {scrollbar-3dlight-color:#1E262F;
scrollbar-arrow-color:#6B4040;
scrollbar-base-color:#1F2D47;
scrollbar-darkshadow-color:#6B4040;
scrollbar-face-color:#1E262F;
scrollbar-highlight-color:#9B9B9B;
scrollbar-shadow-color:#1E262F}

and all works fine again.. i had these two reversed so somehow it caused the blank page and the weird Controlpanel.
Is this a known bug?