Uncaught Exception: [ckeditor.editor] The Instance Already Exists

I've included the CKEditor on my site. Everything works even though I get this JS error: uncaught exception: [CKEDITOR.editor] The instance 'simple_editor' already exists. The code

Solution 1:

remove class='ckeditor' as it's triggering the automatic replacement system.

Solution 2:

<textarea id="textarea1" name="textarea1" runat="server" ></textarea>
<script>

$(document).ready(function () {

            loadEditor('<%= textarea1.ClientID %>');
        });

        function loadEditor(id) {
            var instance = CKEDITOR.instances[id];
            if (instance) {
                CKEDITOR.remove(instance);
            }
            CKEDITOR.replace(id, { toolbar: 'Basic' });
        }

</script>