Lost most of site after changing settings in Layout Boxes

Hi,
I was almost ready to launch new site after final settings on side boxes through the layout boxes controller.
What I'm left with now this <www.helmethiders.com.au>
Not sure where to start with fix - would appreciate any help!

What sidebox do you have enabled in the left column after the Login Sidebox ?

Hi Stevesh,
It's Languages. Doesn't change if I turn it off, however.

Just looking further along your line of reasoning (I think) shows strange result:
The log in sidebox only shows if the Logo sidebox is also on. If the logo sidebox is off, the login doesn't show.
The Logo sidebox was active, but now doesn't show up.
Also just noticed: if the languages header sidebox is on, the login doesn't show either.
Any suggestions?

A quick check shows your pages(s) are not loading in its entirety but is stopping at an HTML coding error, just after the "loginbox".

Visit http://validator.w3.org/ to see what I mean.

Yea! It's back!
Seems to be categories sidebox. Haven't looked further but if it's off everything is back.
I don't use it in any case as categories are on the drop down menu - not sure how it came to be on.
Is that expected behavior? Not that you would categories sidebox and dropdown menu.