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 ...

I've tried the Spell Check tool in Cute Editor, but I was unable to make it work on Cyrillic. I'm working with Cute Editor 6.6 and NetSpell. I've also try this in the official demo Cute editor, also it doesn't work with words written in Cyrillic, for example ''Проба''.