Sergiominimal

Sorry for the reply delay.

I have checked errors, there is only one:

Uncaught TypeError: Object [object Object] has no method 'Jcrop' admin.php?page=easy-contact-forms-main-page:65
(anonymous function) admin.php?page=easy-contact-forms-main-page:65
c load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-migrate,jquery-ui-core,jquery-ui-widget,jquery-u…:3
p.fireWith load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-migrate,jquery-ui-core,jquery-ui-widget,jquery-u…:3
x.extend.ready load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-migrate,jquery-ui-core,jquery-ui-widget,jquery-u…:3
q load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-migrate,jquery-ui-core,jquery-ui-widget,jquery-u…:3
event.returnValue is deprecated.
Please use the standard event.preventDefault() instead.

I thinks than the jquery load is correct, I have tried to load the last version of jquery on the header of admin, and then the fields from the form, dissapaired. This is the scripts what I have on the admin header:

<script type="text/javascript">
addLoadEvent = function(func){if(typeof jQuery!="undefined")jQuery(document).ready(func);else if(typeof wpOnload!='function'){wpOnload=func;}else{var oldonload=wpOnload;wpOnload=function(){oldonload();func();}}};
var ajaxurl = '/wp-admin/admin-ajax.php',
	pagenow = 'toplevel_page_easy-contact-forms-main-page',
	typenow = '',
	adminpage = 'toplevel_page_easy-contact-forms-main-page',
	thousandsSeparator = '.',
	decimalPoint = ',',
	isRtl = 0;
</script>
<link rel="stylesheet" href="www.domain.com/wp-admin/load-styles.php?c=1&dir=ltr&load=admin-bar,wp-admin,buttons,wp-auth-check&ver=3.7.1" type="text/css" media="all">
<link rel="stylesheet" id="thickbox-css" href="www.domain.com/wp-includes/js/thickbox/thickbox.css?ver=20121105" type="text/css" media="all">
<link rel="stylesheet" id="custom_meta_css-css" href="www.domain.com/wp-content/themes/boldy/admin/shortcodes/shortcodes.css?ver=3.7.1" type="text/css" media="all">
<link rel="stylesheet" id="colors-css" href="www.domain.com/wp-admin/css/colors-fresh.min.css?ver=3.7.1" type="text/css" media="all">
<!--[if lte IE 7]>
<link rel='stylesheet' id='ie-css'  href='www.domain.com/wp-admin/css/ie.min.css?ver=3.7.1' type='text/css' media='all' />
<![endif]-->
<link rel="stylesheet" id="ai1ec-admin-css" href="www.domain.com/wp-content/plugins/all-in-one-event-calendar/app/view/admin/css/admin.css?ver=1.10.9-standard" type="text/css" media="all">

<script type="text/javascript">
/* <![CDATA[ */
var userSettings = {"url":"\/","uid":"1","time":"1386931606"};/* ]]> */
</script><style type="text/css"></style>
<script type="text/javascript" src="www.domain.com/wp-admin/load-scripts.php?c=1&load%5B%5D=jquery-core,jquery-migrate,jquery-ui-core,jquery-ui-widget,jquery-ui-mouse,jquery-ui-sortable,postbox,utils&ver=3.7.1"></script>
<script type="text/javascript" src="www.domain.com/wp-content/plugins/all-in-one-event-calendar/app/view/admin/js/require.js?ver=1.10.9-standard" data-main="www.domain.com/wp-content/plugins/all-in-one-event-calendar/app/view/admin/js/main.js"></script>
<script type="text/javascript" src="www.domain.com/wp-content/themes/boldy/admin/js/site5mediauploader.js?ver=3.7.1"></script>

    <script type="text/javascript">
	/**
     * jClop
     */
	jQuery(document).ready(function($) {
		$(function(){
			$('#cropbox').Jcrop({
				minSize: [ 960, 420],
				maxSize: [ 960, 420 ],
				allowResize: true,
				setSelect:[ , , ,  ],
				onSelect: updateCoords
			});
		});

		function updateCoords(c)
		{
			$('#x').val(c.x);
			$('#y').val(c.y);
			$('#x2').val(c.x2);
			$('#y2').val(c.y2);
			$('#w').val(c.w);
			$('#h').val(c.h);
		};
	});
	</script>

		<script>
			function aioseop_show_pointer( handle, value ) {
				if ( typeof( jQuery ) != 'undefined' ) {
					var p_edge = 'bottom';
					var p_align = 'center';
					if ( typeof( jQuery( value.pointer_target ).pointer) != 'undefined' ) {
						if ( typeof( value.pointer_edge ) != 'undefined' ) p_edge = value.pointer_edge;
						if ( typeof( value.pointer_align ) != 'undefined' ) p_align = value.pointer_align;
						jQuery(value.pointer_target).pointer({
									content    : value.pointer_text,
									position: {
										edge: p_edge,
										align: p_align
									},
									close  : function() {
										jQuery.post( ajaxurl, {
											pointer: handle,
											action: 'dismiss-wp-pointer'
										});
									}
								}).pointer('open');
					}
				}
			}
						if ( typeof( jQuery ) != 'undefined' ) {
				jQuery(document).ready(function() {
					var admin_pointer;
					var admin_index;
									});
			}
					</script>
		<script type="text/javascript" src="www.domain.com/wp-content/plugins/all-in-one-seo-pack/quickedit_functions.js"></script>

		<script type="text/javascript" src="www.domain.com/wp-includes/js/tw-sack.min.js?ver=1.6.1"></script>

<script type="text/javascript" charset="utf-8" async="" data-requirecontext="_" data-requiremodule="main" src="www.domain.com/wp-content/plugins/all-in-one-event-calendar/app/view/admin/js/main.js?ver=1.10.1-standard"></script><script type="text/javascript" charset="utf-8" async="" data-requirecontext="_" data-requiremodule="scripts/common_scripts/backend/common_backend" src="www.domain.com/wp-content/plugins/all-in-one-event-calendar/app/view/admin/js/scripts/common_scripts/backend/common_backend.js?ver=1.10.1-standard"></script><script type="text/javascript" charset="utf-8" async="" data-requirecontext="_" data-requiremodule="jquery" src="www.domain.com/wp-content/plugins/all-in-one-event-calendar/app/view/admin/js/require_jquery.js?ver=1.10.1-standard"></script><script type="text/javascript" charset="utf-8" async="" data-requirecontext="_" data-requiremodule="jquery_lib" src="www.domain.com/wp-content/plugins/all-in-one-event-calendar/app/view/admin/js/jquery_lib.js?ver=1.10.1-standard"></script><link rel="stylesheet" href="www.domain.com/wp-content/plugins/easy-contact-forms/js/tinymce/themes/advanced/skins/default/ui.css?ver=3.7.1">

I have change the domain to preserve the web privacy.

I hope anybody could help me, thanks very much for the answer,
and sorry again for my englsih.