Need help with this XML Block.

[Matthew Hawley]

So I made this XML Block, and I can't seem to install it on xenporta. I get this:

The provided file was not a valid XML file. Please provide a valid XML file.

<?xml version="1.0" encoding="utf-8"?>
<block block_id="GameTracker" title="[yolulz] GameTracker Block" version_string="1.0.0" version_id="1" url="" install_callback_class="" install_callback_method="" uninstall_callback_class="" uninstall_callback_method="" cache="+1 days">
  <admin_templates/>
  <listeners/>
  <options>
    <option option_id="GameTrackerURL1" edit_format="textbox" data_type="string" display_order="1">
      <option_value></option_value>
      <edit_format_params></edit_format_params>
      <sub_options></sub_options>
      <title>GameTracker URL 1</title>
      <explain>Please enter your GameTracker URL.></explain>
    </option>
    <option option_id="GameTrackerURL2" edit_format="textbox" data_type="string" display_order="2">
      <option_value></option_value>
      <edit_format_params></edit_format_params>
      <sub_options></sub_options>
      <title>GameTracker URL 2</title>
      <explain>Please enter your GameTracker URL.</explain>
    </option>
  </options>
  <phrases>
    <phrase title="yolulz_GameTracker_Title">GameTracker</phrase>
  </phrases>
  <route_prefixes/>
  <templates>
    <template title="yolulz_GameTracker">
 
<div class="section">
    <div class="secondaryContent">
        <h3>{xen:phrase yolulz_GameTracker}</h3>
        <div>
        <center>
        <a href="http://www.gametracker.com/server_info/{$option.GameTrackerURL1}" target="_blank"><img src="http://cache.www.gametracker.com/server_info/{$option.GameTrackerURL2}/b_160_400_1_ffffff_c5c5c5_ffffff_000000_0_1_0.png" border="0" width="160" height="248" alt="" /></a>
        </center>
        <br />
        <center>
        <a href="http://www.gametracker.com/server_info/{$option.GameTrackerURL1}" target="_blank"><img src="http://cache.www.gametracker.com/server_info/{$option.GameTrackerURL1}/b_160_400_1_ffffff_c5c5c5_ffffff_000000_0_1_0.png" border="0" width="160" height="248" alt="" /></a>
        </center>
        <br />
   
        </div>
    <div>
</div>
</template>
</templates>
</block>