Sorry, I was wrong concerning script error.
I forgot I use my theme with java script for moving between track pages I found here.

<!--
function printTrackLinks()
{

var url = document.URL;
var track = <dax:tracknum/>;

document.write("<table class=\"tracklink\"><tr>");

// Left
if (track > 1)
document.write("<td class=\"lefttracklink\"><a href=\"" +
url.replace(/track=(\d+)/,"track=" + (track-1)) +
"\"><<< Previous track &amp;nbsp;&amp;nbsp;</a></td>");

// Right
if (track < <dax:trackcount/>)
document.write("<td class=\"righttracklink\"><a href=\"" +
url.replace(/track=(\d+)/,"track=" + (track+1)) +
"\">&amp;nbsp;&amp;nbsp; Next track >>></a></td>");

document.write("</tr></table>");

}
-->

Any ideas how to make it works for vynil sides?