Hi,We see the following error message whenever we try to use the spell check button: ''HTML entry is not allowed on that page. Such as &#, < followed by a character, < followed by !, or double underscore.'' It does not matter if we have any text typed into the editor field or not, it fails for both empty as well as ...

When I click the Spell Check button on the editor toolbar, I get the following error:  A potentiall dangerous Request.Form value was detected from the client (CurrentText=''my content here'') My web app is using .Net Framework 4.0, if I change it to 3.5 the spell check opens fine.  I have tried turning off request validation ...