1. I just tested version 6.0. The Iframe tag is not stripped.

 

2. >>I get a compilation error and can't make it work

 

Please remove CuteEditor.dll from your project reference. Then add the reference to the new CuteEditor.dll. Recompile your project.

 

3. >>New computer, from XP Pro to Vista Pro, and added ASP.Net AJAX : could it be the reason of my problems ?

 

No.

 

>>Do I have to change anything in the web.config for example ?

 

No.