Background manager URL werkt niet.

/*
Theme Name: Tentracks4
Theme URI:
Description: Artisteer-generated theme
Version: 1.0
Author:
Author URI:
Tags: fixed width, right sidebar, two columns, valid XHTML, widgets
*/

/* begin Page */

/* Generated with Artisteer version 2.3.0.25199, file checksum is 95B4C01F. */

body
{
	margin: 0 auto;
	padding: 0;
	background-color: #171519;
	background-image: url('images/Page-BgTexture.jpg');
	background-repeat: repeat;
	background-attachment: scroll;
	background-position: top left;
}

#art-main
{
	position: relative;
	width: 100%;
	left: 0;
	top: 0;
}

#art-page-background-gradient
{
	position: absolute;
	background-image: url('images/Page-BgGradient.jpg');
	background-repeat: repeat-x;
	top:0;
	width:100%;
	height: 900px;

}

#art-page-background-gradient
{
	background-position: top left;
}

.cleared
{
	float: none;
	clear: both;
	margin: 0;
	padding: 0;
	border: none;
	font-size:1px;
}

form
{
	padding:0 !important;
	margin:0 !important;
}

table.position
{
	position: relative;
	width: 100%;
	table-layout: fixed;
}
/* end Page */

/* begin Box, Sheet */
.art-Sheet
{
	position:relative;
	z-index:0;
	margin:0 auto;
	width: 700px;
	min-width:1px;
	min-height:1px;
}

.art-Sheet-body
{
	position: relative;
	z-index: 1;
	padding: 0px;
}

.art-Sheet
{
	margin-top: 200px !important;
}

#art-page-background-simple-gradient, #art-page-background-gradient, #art-page-background-glare
{
	min-width:700px;
}

/* end Box, Sheet */

/* begin Menu */
/* menu structure */

.art-menu a, .art-menu a:link, .art-menu a:visited, .art-menu a:hover
{
	text-align:left;
	text-decoration:none;
	outline:none;
	letter-spacing:normal;
	word-spacing:normal;
}

.art-menu, .art-menu ul
{
	margin: 0;
	padding: 0;
	border: 0;
	list-style-type: none;
	display: block;
}

.art-menu li
{
	margin: 0;
	padding: 0;
	border: 0;
	display: block;
	float: left;
	position: relative;
	z-index: 5;
	background:none;
}

.art-menu li:hover
{
	z-index: 10000;
	white-space: normal;
}

.art-menu li li
{
	float: none;
}

.art-menu ul
{
	visibility: hidden;
	position: absolute;
	z-index: 10;
	left: 0;
	top: 0;
	background:none;
}

.art-menu li:hover>ul
{
	visibility: visible;
	top: 100%;
}

.art-menu li li:hover>ul
{
	top: 0;
	left: 100%;
}

.art-menu:after, .art-menu ul:after
{
	content: ".";
	height: 0;
	display: block;
	visibility: hidden;
	overflow: hidden;
	clear: both;
}
.art-menu, .art-menu ul
{
	min-height: 0;
}

.art-menu ul
{
	background-image: url(images/spacer.gif);
	padding: 10px 30px 30px 30px;
	margin: -10px 0 0 -30px;
}

.art-menu ul ul
{
	padding: 30px 30px 30px 10px;
	margin: -30px 0 0 -10px;
}

ul.art-menu
{
	float:right;
}

/* menu structure */

.art-menu
{
	padding: 0px 0px 0px 0px;
}

.art-nav
{
	position: relative;
	height: 24px;
	z-index: 100;
}

/* end Menu */

/* begin MenuItem */
.art-menu ul li
{
	clear: both;
}

.art-menu a
{
	position:relative;
	display: block;
	overflow:hidden;
	height: 24px;
	cursor: pointer;
	text-decoration: none;
	margin-right: 0px;
	margin-left: 0px;
}

.art-menu a .r, .art-menu a .l
{
	position:absolute;
	display: block;
	top:0;
	z-index:-1;
	height: 72px;
	background-image: url('images/MenuItem.png');
}

.art-menu a .l
{
	left:0;
	right:0px;
}

.art-menu a .r
{
	width:400px;
	right:0;
	clip: rect(auto, auto, auto, 400px);
}

.art-menu a .t
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-size: 13px;
font-style: normal;
font-weight: bold;
letter-spacing: 1px;
text-transform: uppercase;
	color: #D4D4D4;
	padding: 0 17px;
	margin: 0 0px;
	line-height: 24px;
	text-align: center;
}

.art-menu a:hover .l, .art-menu a:hover .r
{
	top:-24px;
}

.art-menu li:hover>a .l, .art-menu li:hover>a .r
{
	top:-24px;
}

.art-menu li:hover a .l, .art-menu li:hover a .r
{
	top:-24px;
}
.art-menu a:hover .t
{
	color: #000000;
}

.art-menu li:hover a .t
{
	color: #000000;
}

.art-menu li:hover>a .t
{
	color: #000000;
}

/* end MenuItem */

/* begin MenuSeparator */
.art-nav .art-menu-separator
{
	display: block;
	width: 1px;
	height: 24px;
	background-image: url('images/MenuSeparator.png');
}

/* end MenuSeparator */

/* begin ContentLayout */
.art-contentLayout
{
	position: relative;
	margin-bottom: 0px;
	width: 700px;
}
/* end ContentLayout */

/* begin Box, Block */
.art-Block
{
	position:relative;
	z-index:0;
	margin:0 auto;
	min-width:1px;
	min-height:1px;
}

.art-Block-body
{
	position: relative;
	z-index: 1;
	padding: 7px;
}

.art-Block
{
	margin: 7px;
}

/* end Box, Block */

/* begin Box, BlockContent */
.art-BlockContent
{
	position:relative;
	z-index:0;
	margin:0 auto;
	min-width:1px;
	min-height:1px;
}

.art-BlockContent-body
{
	position: relative;
	z-index: 1;
	padding: 0px;
}

.art-BlockContent-body
{
	color:#C7C7C7;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-size: 13px;
}

.art-BlockContent-body a:link
{
	color: #ABABAB;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: underline;
}

.art-BlockContent-body a:visited, .art-BlockContent-body a.visited
{
	color: #DEDBE1;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: none;
}

.art-BlockContent-body a:hover, .art-BlockContent-body a.hover
{
	color: #FFC08A;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: none;
}

.art-BlockContent-body ul
{
	list-style-type: none;
	color: #D4D0D7;
	margin:0;
	padding:0;
}

.art-BlockContent-body ul li
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-size: 13px;
margin-left: 12px;
line-height: 125%;
  line-height: 1.25em;
  padding: 0px 0 0px 11px;
  background-image: url('images/BlockContentBullets.png');
  background-repeat: no-repeat;
}

/* end Box, BlockContent */

/* begin Box, Post */
.art-Post
{
	position:relative;
	z-index:0;
	margin:0 auto;
	min-width:1px;
	min-height:1px;
}

.art-Post-body
{
	position: relative;
	z-index: 1;
	padding: 15px;
}

.art-Post
{
	margin: 5px;
}

/* Start images */
a img
{
	border: 0;
}

.art-article img, img.art-article
{
	margin: 1em;
}

.art-metadata-icons img
{
	border: none;
	vertical-align: middle;
	margin: 2px;
}
/* Finish images */

/* Start tables */

.art-article table, table.art-article
{
	border-collapse: collapse;
	margin: 1px;
	width:auto;
}

.art-article table, table.art-article .art-article tr, .art-article th, .art-article td
{
	background-color:Transparent;
}

.art-article th, .art-article td
{
	padding: 2px;
	border: solid 1px #8E8395;
	vertical-align: top;
	text-align:left;
}

.art-article th
{
	text-align: center;
	vertical-align: middle;
	padding: 7px;
}

/* Finish tables */

pre
{
	overflow: auto;
	padding: 0.1em;
}

/* end Box, Post */

/* begin PostHeaderIcon */
.art-PostHeader
{
	text-decoration:none;
	margin: 0.2em 0;
	padding: 0;
	font-weight:normal;
	font-style:normal;
	letter-spacing:normal;
	word-spacing:normal;
	font-variant:normal;
	text-decoration:none;
	font-variant:normal;
	text-transform:none;
	text-align:left;
	text-indent:0;
	line-height:inherit;
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
font-size: 22px;
font-style: normal;
font-weight: bold;
letter-spacing: 2px;
text-align: left;
margin-top: 12px;
margin-bottom: 8px;
	color: #D4D4D4;
}

.art-PostHeader a, .art-PostHeader a:link, .art-PostHeader a:visited, .art-PostHeader a:hover
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
font-size: 22px;
font-style: normal;
font-weight: bold;
letter-spacing: 2px;
text-align: left;
margin-top: 12px;
margin-bottom: 8px;
	margin:0;
	color: #D4D4D4;
}

/* end PostHeaderIcon */

/* begin PostHeader */
.art-PostHeader a:link
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
text-decoration: none;
text-align: left;
  color: #C7C7C7;
}

.art-PostHeader a:visited, .art-PostHeader a.visited
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
text-decoration: none;
text-align: left;
  color: #C8C2CB;
}

.art-PostHeader a:hover, .art-PostHeader a.hovered
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
text-decoration: underline;
text-align: left;
  color: #787878;
}
/* end PostHeader */

/* begin PostIcons */
.art-PostHeaderIcons
{
	padding:1px;
}

.art-PostHeaderIcons, .art-PostHeaderIcons a, .art-PostHeaderIcons a:link, .art-PostHeaderIcons a:visited, .art-PostHeaderIcons a:hover
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-size: 12px;
letter-spacing: 1px;
	color: #D4D0D7;
}

.art-PostHeaderIcons a, .art-PostHeaderIcons a:link, .art-PostHeaderIcons a:visited, .art-PostHeaderIcons a:hover
{
	margin:0;
}

.art-PostHeaderIcons a:link
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-style: normal;
font-weight: bold;
text-decoration: none;
	color: #ABABAB;
}

.art-PostHeaderIcons a:visited, .art-PostHeaderIcons a.visited
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: none;
letter-spacing: 1px;
	color: #ABABAB;
}

.art-PostHeaderIcons a:hover, .art-PostHeaderIcons a.hover
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: underline;
	color: #787878;
}
/* end PostIcons */

/* begin PostContent */
/* Content Text Font & Color (Default) */
body
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-size: 13px;
font-style: normal;
font-weight: normal;
letter-spacing: 1px;
  color: #ACA4B2;
}

.art-PostContent p
{
	margin: 0.5em 0;
}

.art-PostContent, .art-PostContent p
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
letter-spacing: 1px;
  color: #ACA4B2;
}

.art-PostContent
{
  margin:0;
}

/* Start Content link style */
/*
The right order of link pseudo-classes: Link-Visited-Hover-Focus-Active.
http://www.w3schools.com/CSS/css_pseudo_classes.asp
http://meyerweb.com/eric/thoughts/2007/06/11/who-ordered-the-link-states/
*/
a
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: underline;
letter-spacing: 1px;
  color: #ABABAB;
}

/* Adds special style to an unvisited link. */
a:link
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: underline;
letter-spacing: 1px;
  color: #ABABAB;
}

/* Adds special style to a visited link. */
a:visited, a.visited
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: underline;
  color: #ACA4B2;
}

/* :hover - adds special style to an element when you mouse over it. */
a:hover, a.hover
{
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: none;
  color: #787878;
}

/* Finish Content link style */

/* Resert some headings default style & links default style for links in headings*/
h1, h2, h3, h4, h5, h6,
h1 a, h2 a, h3 a, h4 a, h5 a, h6 a
h1 a:hover, h2 a:hover, h3 a:hover, h4 a:hover, h5 a:hover, h6 a:hover
h1 a:visited, h2 a:visited, h3 a:visited, h4 a:visited, h5 a:visited, h6 a:visited
{
  font-weight: normal;
  font-style: normal;
  text-decoration: none;
}

/* Start Content headings Fonts & Colors  */
h1, h1 a, h1 a:link, h1 a:visited, h1 a:hover
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
font-size: 24px;
letter-spacing: 3px;
text-align: left;
  color: #ABABAB;
}

h2, h2 a, h2 a:link, h2 a:visited, h2 a:hover
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
font-size: 22px;
letter-spacing: 2px;
text-align: left;
  color: #C4C4C4;
}

h3, h3 a, h3 a:link, h3 a:visited, h3 a:hover
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
font-size: 20px;
letter-spacing: 2px;
text-align: left;
  color: #ACA4B2;
}

h4, h4 a, h4 a:link, h4 a:visited, h4 a:hover
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
font-size: 15px;
letter-spacing: 2px;
text-align: left;
  color: #C7C7C7;
}

h5, h5 a, h5 a:link, h5 a:visited, h5 a:hover
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
font-size: 13px;
letter-spacing: 2px;
text-align: left;
  color: #C7C7C7;
}

h6, h6 a, h6 a:link, h6 a:visited, h6 a:hover
{
font-family: Verdana, Geneva, Arial, Helvetica, Sans-Serif;
font-size: 13px;
letter-spacing: 2px;
text-align: left;
  color: #C7C7C7;
}
/* Finish Content headings Fonts & Colors  */
/* end PostContent */

/* begin PostBullets */
/* Start Content list */
ol, ul
{
	color: #D4D0D7;
	margin:1em 0 1em 2em;
	padding:0;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-size: 13px;
text-align: left;
}

li ol, li ul
{
	margin:0.5em 0 0.5em 2em;
	padding:0;
}

li
{
	margin:0.2em 0;
	padding:0;
}

ul
{
	list-style-type: none;
}

ol
{
	list-style-position:inside;

}

.art-Post li
{
	padding:0px 0 0px 16px;
	line-height:1.2em;
}

.art-Post ol li, .art-Post ul ol li
{
	background: none;
	padding-left:0;
}

.art-Post ul li, .art-Post ol ul li
{
	background-image: url('images/PostBullets.png');
	background-repeat:no-repeat;
	padding-left:16px;
}

/* Finish Content list */
/* end PostBullets */

/* begin PostQuote */
/* Start blockquote */
blockquote,
blockquote p,
.art-PostContent blockquote p
{
	color:#2F2A32;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-style: italic;
font-weight: normal;
text-align: left;
}

blockquote,
.art-PostContent blockquote
{
		margin:10px 10px 10px 50px;
	padding:5px 5px 5px 32px;
	background-color:#FFD3AD;
	background-image:url('images/PostQuote.png');
	background-position:left top;
	background-repeat:no-repeat;
}

/* Finish blockuote */
/* end PostQuote */

/* begin Button */
.art-button-wrapper .art-button
{
	display:inline-block;
	width: auto;
	outline:none;
	border:none;
	background:none;
	line-height:26px;
	margin:0 !important;
	padding:0 !important;
	overflow: visible;
	cursor: default;
	text-decoration: none !important;
	z-index:0;
	vertical-align: middle;
}

.art-button img, .art-button-wrapper img
{
  margin: 0;
}

.art-button-wrapper
{
	display:inline-block;
	vertical-align: middle;
	position:relative;
	height: 26px;
	overflow:hidden;
	white-space: nowrap;
	width: auto;
	z-index:0;
}

.firefox2 .art-button-wrapper
{
	display:block;
	float:left;
}

.art-button-wrapper .art-button
{
	display:block;
	height: 26px;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-size: 13px;
font-style: normal;
font-weight: bold;
letter-spacing: 1px;
	white-space: nowrap;
	text-align: left;
	padding: 0 11px !important;
	line-height: 26px;
	text-decoration: none !important;
	color: #F2F2F2 !important;
}

input, select
{
  vertical-align: middle;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-size: 13px;
font-style: normal;
font-weight: bold;
letter-spacing: 1px;
}

.art-button-wrapper.hover .art-button, .art-button:hover
{
	color: #241100 !important;
	text-decoration: none !important;
}

.art-button-wrapper.active .art-button
{
	color: #F5F4F6 !important;
}

.art-button-wrapper .l, .art-button-wrapper .r
{
	display:block;
	position:absolute;
	z-index:-1;
	height: 78px;
	background-image: url('images/Button.png');
}

.art-button-wrapper .l
{
	left:0;
	right:9px;
}

.art-button-wrapper .r
{
	width:407px;
	right:0;
	clip: rect(auto, auto, auto, 398px);
}

.art-button-wrapper.hover .l, .art-button-wrapper.hover .r
{
	top: -26px;
}

.art-button-wrapper.active .l, .art-button-wrapper.active .r
{
	top: -52px;
}

/* end Button */

/* begin Footer */
.art-Footer
{
	position:relative;
	z-index:0;
	overflow:hidden;
	width: 700px;
	margin: 5px auto 0px auto;
}

.art-Footer .art-Footer-inner
{
	height:1%;
	position: relative;
	z-index: 0;
	padding: 15px;
	text-align: left;
}

.art-Footer .art-Footer-text p
{
	margin: 0;
}

.art-Footer .art-Footer-text
{
	display:inline-block;
	color:#FFFFFF;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-size: 12px;
letter-spacing: 1px;
}

.art-Footer .art-Footer-text a:link
{
	text-decoration: none;
	color: #ABABAB;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
font-style: normal;
font-weight: bold;
text-decoration: none;
}

.art-Footer .art-Footer-text a:visited
{
	text-decoration: none;
	color: #ACA4B2;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: none;
}

.art-Footer .art-Footer-text a:hover
{
	text-decoration: none;
	color: #787878;
font-family: Tahoma, Arial, Helvetica, Sans-Serif;
text-decoration: underline;
}
/* end Footer */

/* begin PageFooter */
.art-page-footer, .art-page-footer a, .art-page-footer a:link, .art-page-footer a:visited, .art-page-footer a:hover
{
	font-family:Arial;
	font-size:10px;
	letter-spacing:normal;
	word-spacing:normal;
	font-style:normal;
	font-weight:normal;
	text-decoration:underline;
	color:#C4C4C4;
}

.art-page-footer
{
	margin:1em;
	text-align:center;
	text-decoration:none;
	color:#C5C0C9;
}
/* end PageFooter */

/* begin LayoutCell */
.art-contentLayout .art-content
{
	position: relative;
	margin: 0;
	padding: 0;
	border: 0;
	float: left;
	overflow: hidden;
	width: 524px;
}
.art-contentLayout .art-content-wide
{
	position: relative;
	margin: 0;
	padding: 0;
	border: 0;
	float: left;
	overflow: hidden;
	width: 698px;
}
/* end LayoutCell */

/* begin LayoutCell */
.art-contentLayout .art-sidebar1
{
	position: relative;
	margin: 0;
	padding: 0;
	border: 0;
	float: left;
	overflow: hidden;
	width: 174px;
}
/* end LayoutCell */

.commentlist, .commentlist li
{
	background: none;
}

.commentlist li li
{
	margin-left:30px;
}

.commentlist li .avatar
{
	float: right;
	border: 1px solid #eee;
	padding: 2px;
	margin:1px;
	background: #fff;
}

.commentlist li cite
{
	font-size:1.2em;
}

#commentform textarea
{
	width: 100%;
}

img.wp-smiley
{
	border:none;
	margin:0;
	padding:0;
}

.navigation
{
	display: block;
	text-align: center;
}

/* Recommended by http://codex.wordpress.org/CSS */
/* Begin */
.aligncenter, div.aligncenter, .art-article .aligncenter img, .aligncenter img.art-article, .aligncenter img, img.aligncenter
{
	display: block;
	margin-left: auto;
	margin-right: auto;
}

.alignleft
{
	float: left;
}

.alignright
{
	float: right;
}

.alignright img, img.alignright
{
	margin: 1em;
	margin-right: 0;
}

.alignleft img, img.alignleft
{
	margin: 1em;
	margin-left: 0;
}

.wp-caption
{
	border: 1px solid #ddd;
	text-align: center;
	background-color: #f3f3f3;
	padding-top: 4px;
	margin: 10px;
}

.wp-caption img
{
	margin: 0;
	padding: 0;
	border: 0 none;
}

.wp-caption p.wp-caption-text
{
	font-size: 11px;
	line-height: 17px;
	padding: 0 4px 5px;
	margin: 0;
}
/* End */

.hidden
{
	display: none;
}

/* Calendar */
#wp-calendar {
	empty-cells: show;
	margin: 10px auto 0;
	width: 155px;
}

#wp-calendar #next a {
	padding-right: 10px;
	text-align: right;
}

#wp-calendar #prev a {
	padding-left: 10px;
	text-align: left;
}

#wp-calendar a {
	display: block;
}

#wp-calendar caption {
	text-align: center;
	width: 100%;
}

#wp-calendar td {
	padding: 3px 0;
	text-align: center;
}

.gallery {
    letter-spacing: normal;
}

#todays-events{
  position: relative;
  z-index: 11;
}

#upcoming-events{
  position: relative;
  z-index: 10;
}

Maar het gaat om een Click-able background dus de URL is niet bedoeld als locatie van de afbeelding. De afbeelding heb ik de upload en die staat.