Hi there,
You take a look here: [login to view URL]
I believe the error was caused when somebody switched the wp language. from either US to GB I am unsure.
I just added in the [login to view URL] file this: define ('WPLANG', 'en_US'); and it seems to have corrected part of the issue when you go here: [login to view URL]
HappY BiddinG!