Hi guys
I Run a pretty large forum (
www.themoneyshed.co.uk) (90,000+ posts over 3+ years) and suddenly tonight when I go into it it looks like this

I have no options at the top and obviously that white bar shouldn't be there
If I try and look at a thread by clicking on one I'd be ones on the front page I get

So it doesn't even throw the thread and again no menus
I've tried changing the theme and the same problem occurs
If you access the forum on your phone then the site DOES work on the mobile theme
PLEASE does anyone know what's happened here and how I can fix it !!