It works when running your demo, but it does not work when running local.

So maybe some setting needs to be adjusted?

 

My settings are:

 

            $editor=new CuteEditor();
            $editor->ID="Editor1";
            $editor->Text="";
            $editor->EditorBodyStyle="font:normal 16px arial;";
            $editor->FilesPath="/forum/CuteEditor_Files";
            $editor->ImageGalleryPath = "/forum/tempupload";
            $editor->HelpUrl="/test_index.htm";
            $editor->CustomCulture="sv";
            $editor->ConfigurationPath = "/forum/CuteEditor_Files/Configuration/my.config";
            $editor->Width="98%";
            $editor->Height=400;
            $editor->EnableObjectResizing=false;
            $editor->UsePhysicalFormattingTags=true;
            $editor->MaxHTMLLength=5000;
            $editor->ThemeType="OfficeXP";
            $editor->UseSimpleAmpersand=true;
            $editor->MaxImageSize = 2000;

 

Information:

- It's the wrong font when using the preview button. BUT it works with the preview link at the bottom of the editor.

- It works with FF.