One Example (the animation works fine, but Firebug displays infinte error messages, or the browser respectively slows down after a while and crashes in the end):

Code:

<script type="text/javascript" src="./js/jquery/jquery-1.2.1.js"></script>
<script type="text/javascript" src="./js/interface/interface.js"></script>
<div id="myDiv">some Text, img, whatever</div>
<script type="text/javascript">
//<![CDATA[
$(document).ready(function(){
  $('#myDiv').BlindUp(500);
});
//]]-->
</script>

Error:

this.options.curAnim has no properties
step()
t()
(no name)()
this.options.curAnim[ this.prop ] = true;
in jquery-1.2.1.js (line 2833)

I hope this helps enhancing a great addon to jquery :)

Michele