Widget Page Blank – No errors messages to work from

Updated our WordPress yesterday to the new 2.3.3(from 2.2) for the security reasons. Now some of the plugins we used aren’t working (due to compatibility reasons – so no problems there, just have to wait for updated versions)

But i cannot edit my sidebar for some reason. The “widget” sub menu appears under my presentation for my Blog Theme, but it’s blank??? No errors, no warning, zip.

Something i need to change on our side? possible to replace the widget file on it’s own? been doing a bit of reading around, but nothing that touches on a blank widget page, wish i could at least recieve an error message to work with.

Any feedback would be much appreciated