i forgot to mention i can get it to work on single posts just fine.
this is the html that is rendered when attempting the mashup
<div class="pgmm"><input type="hidden" name="pgmm-info" value="{"width":300,"height":200,"zoom":8,"mapTypeId":"satellite","hideList":true,"fitBounds":null,"markerOptions":{"icon":"http:\/\/google-maps-icons.googlecode.com\/files\/photo.png"}}" /><div class="canvas" style="width: 300px; height: 200px;"></div><ul></ul></div>