why does ie8 grief me

i get configuration errro screen for ie8, but other browsers work fine.

When I go to my page http://scrabblecheat.com then ie8 fails
but http://scrabblecheat.com/default.aspx works fine.

Well the pages loads, but if you type in letters in the both and hit the submit button that is when it fails. Just weird...ie7 worked fine.

 

It is browser incompatibility of your application

 

I thought that to, but it works sometimes and sometimes it doesn't.
That is the worst to figure out.