Hey All
Any one else have a similar problem?
I've included a Twitter class in Page, for auto tweeting after writing data.

Goes like
   public function onAfterWrite()
   {
      parent::onAfterWrite();
      include('twitter.php');
      $t = new Twitter('****','****');
      $t->updateStatus("".$this->Title." http://www.mysite.com".$this->Link());
   }

Everything still works fine, data is saved and tweet is sent.
But I get two errors in base.js promoting me that errors occurred and it didn't go according to plan.

From fire fox web tools plugin error console .
"reference to undefined property jQuery.cache[id][name]"
jQuery.cache[id][name]=data;return name?jQuery.cache[id][name]:id;},removeData:function(elem,name){elem=elem==window?windowData:elem;var id=elem[expando];if(name){if(jQuery.cache[id]){delete jQuery.cache[id][name];name="";for(name in jQuery.cache[id])

And

"reference to undefined property window.opera"
if(window.opera&&['left','top','right','bottom'].include(style))

Its probably a difficult thing to answer as it's an issue with my twitter class. Remove the twitter code and all works a charm. Just wondering if anyone had any pointers?

Thanks for the reply banal. I was trying to find the AbsoluteLink, I remember seeing it a 6 months ago but couldn't remember.

I'm using Twitter class by Tijs Verkoyen, tried that google code one you linked to and I get the exact some thing. It sends the tweet fine, but javascript error on save, although the content appears to save.

It seems to be the include('twitter.class.php'); that's throwing it out.

I wasn't sure how PHP handles includes, but after reading this: http://www.php.net/manual/en/function.include.php it appears that if you put an include statement inside a function, the code will be included as if it was defined in the function.
Maybe this causes the issue? Have you also tried include_once (just to be sure the class doesn't get included multiple times)?