<span class="Apple-style-span" style="font-family: 'Times New Roman'; font-size: medium; "><pre>I had exactly this error message a couple of months ago (<a href="http://lists.osgeo.org/pipermail/mapproxy/2010-December/000297.html">http://lists.osgeo.org/pipermail/mapproxy/2010-December/000297.html</a>) and setting a Windows Environment Variable for "MAPPROXY_USE_PYPROJ" to True worked for me.</pre>
<pre>Regards,</pre><pre>Jason</pre></span>