CKEDITOR .NET 3.5.2 .contentCss doesn't work

I just downloaded the NEW CKEDITOR .NET 3.5.2 which was released last week

I tried to make a new ASP.NET page with C# on the back end..

CKEditor1.ContentsCss = "style.css"; <---- doesn't work..


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while on the previous version I was using CKEDITOR 3.5.1 (WITHOUT .NET)

and the

CKEditor1.config.ContentCss = "style.css";
works fie...

anyone experienced with the same problem ??