Sorry for my bad english 
So i use FCKEditor for my HTML/Text module.
Since this morning, when i click into "Edit Page" to edit the content of a module, instead display the correct page (in textrich editor mode), an error message saying that "You are not authorized to view this page" is displayed. But when I switch into "basic text box" mode, it is ok.
I don't know what appened.
Thanks a lot for your help
ps: Even my HTML/Text module contains nothing, the error page will be displayed