Fatal error -Dashboard Problem

Hi,
This is my first post and I already have to ask for HELP !!
The phrase at the end of this post is appearing everywhere I go In My Dashboard. I am hopeful that someone out there has seen this before and knows what caused it and how to get rid of it.

Fatal error: Class ‘Translations’ not found in /home2/thestor6/public_html/wp-includes/l10n.php on line 407

Many Thanks,
l