ckeditor_aspnet_3.5.3 security problem

I am using ckeditor_aspnet_3.5.3 but i get the security problem. I have to ask about my hosting company. Their say my hosting is not support for full trust security.

I have to check back the community on here. they have to say in ckeditor_aspnet_3.5.2 already solved the issuse. May i know why i still have the same problem . Thanks

i have to try 3.5.2 version also.