Hi
Sorry but i cannot see any col mass1 position in your layout, this below is your default layout
<?xml version="1.0" encoding="utf-8"?>
<layout name="desktop">
<!--Extra css load for this layout-->
<stylesheets>
</stylesheets>
<blocks name="top" style="xhtml">
<block name="absolute" type="modules" style="raw">absolute</block>
<block name="cpanel" type="usertools/cpanel"></block>
<block name="top-panel" type="modules" style="raw" main-inner="1">top-panel</block>
<block name="header" type="header" main-inner="1"></block>
<block name="navhelper" type="navhelper" ></block>
<block name="top" type="modules">top</block>
</blocks>
<blocks name="middle" colwidth="20">
<block name="right-mass-top" style="jarounded" >right-mass-top</block>
<block name="right2">left</block>
</blocks>
<blocks name="bottom" style="xhtml">
<block name="topsl" type="spotlight" style="jarounded" main-inner="1" special="right" specialwidth="39">user1,user2,user3</block>
<block name="botsl" type="spotlight" main-inner="1">user8,user9,user10</block>
<block name="footer" type="footer"></block>
</blocks>
</layout>
You can read this guide on how to create and enable new mass positions