hi i had that this morning so i was adviced to use firefox browser and it has been great even in live it the site runs so much better for me
M essage fom web site
Yes i completely agree, i havent encounter any errors with Firefox 4 at all yet
And this is one of the many reasons no one should use Internet Explorer.
Bills1943 are you using Internet Explorer 8? If you are there is already a post related to this and i believe staff are looking into the problem.
Here is the post : http://www.chess.com/forum/view/help-support/error-message