Can't enter new products from Admin!

I am trying to enter new products from the admin, whenever I hot preview instead of the page I was editing I receive a page not found error!!!

http://product.php?cPath=555&product_type=1&pID=31202&action=new_product_preview

I get >>> We are sorry but the page you requested is no longer available, it has been moved or deleted. :shocking:

Have you successfully entered products before now? What have you changed recently? Have you added any new mods?

afo:

Have you successfully entered products before now? What have you changed recently? Have you added any new mods?

Well I really don't understand what happened but the problem seemed to be I deleted sone code generated by the HTML editor >>>

<input type="hidden" id="gwProxy" /><!--Session data--><input type="hidden" id="jsProxy" onclick="function onclick(event) {

    function onclick(event) {

        function onclick(event) {

            function onclick(event) {

                function onclick(event) {

                    function onclick(event) {

                        function onclick(event) {

                            function onclick(event) {

                                function onclick(event) {

                                    function onclick(event) {

                                        function onclick(event) {

                                            function onclick(event) {

                                                function onclick(event) {

                                                    function onclick(event) {

                                                        function onclick(event) {
                                                            jsCall();
                                                        }

                                                    }

                                                }

                                            }

                                        }

                                    }

                                }

                            }

                        }

                    }

                }

            }

        }

    }

}" /><div id="refHTML"></div>

I was editing the EZ-Page directly in source code and I deleted that code, which seemed irrelevant, but is not. So now the problem seems to be solved.