Update 3.5 to 4.1

Hi,

We have an old verison 3.5 and we updated it to the 4.1.

We replace the config.js with our bellow data :

CKEDITOR.editorConfig = function( config )
{
 // Define changes to default configuration here. For example:
 // config.language = 'fr';
 // config.uiColor = '#AADC6E';
 config.toolbar_Basic = [
          ['Bold','Italic','Underline','-','Smiley','-','JustifyLeft','JustifyCenter','JustifyRight','JustifyBlock','-','TextColor','BGColor' ],
          '/',
          ['Format','Font','FontSize']
        ];

        config.toolbar = 'Basic';
        config.height = 140;
        config.resize_enabled = false;
        config.format_tags = 'p;h2;h3;pre'
};

But we have some pb with the 4.1 version, some of button don't appear 'smiley button doesn't appear) and for some others, we don't have the good design button, for example for the text color we have the line number button.

An other problem; In the text box, this character ï» appears automatically when the cursor is positioned

Could some one help me to resolve...

Tks