Hmm, i have not seen or heard of this before.  Is it only the EF Tab that is a problem? Did this happen suddenly or has it been this way all year? If suddenly, when did it start?

By chance is your computer locale set to something other than english, like French or German? Or do you have any data or customers with a non standard character in their name, like an umlaut or something?

We use a third party component for displaying the Grid... so just trying to think of reasons why that might not be working.  Can you also go to Help -> Send Logs and email the resulting .zip file (saved to your desktop) to proseries_engineering@intuit.com?  Note that for a few people the Send Logs is failing too due to permissions issues writing to the desktop.. if that happens for you please email me anyway and I'll send further instructions.