It appears that widget box has changed things.
I've been experiancing problems with embedding widgetbox widgets.
According to the doc i should choose "other" when asked which site to use.
This appears to have changed. As that option appears to no longer been available.
As a work round, use the "get panel code" option.
This will give you something like this:-
<script type="text/javascript" src="http://widgetserver.com/syndication/subscriber/
InsertPanel.js?panelId=d15a1d7b-4933-4da8-b010-04375907922f"></script>
<noscript>Get great free widgets at <a href="http://www.widgetbox.com">Widgetbox</a>!</noscript><img style="visibility:hidden;width:0px;height:0px;"
border="0" width="0" height="0" src="http://runtime.widgetbox.com/syndication/
track/d15a1d7b-4933-4da8-b010-04375907922f.gif" />Strip this down to
<script type="text/javascript" src="http://widgetserver.com/syndication/subscriber/InsertPanel.js?panelId=d15a1d7b-4933-4da8-b010-04375907922f"></script>Then insert that striped down code into the embed tags. ie:-
[[embed]]
<script type="text/javascript" src="http://widgetserver.com/syndication/subscriber/InsertPanel.js?panelId=d15a1d7b-4933-4da8-b010-04375907922f"></script>
[[/embed]]which should then give you
