Scriptalicious Tree is null or not an object line 935 - Internet Explorer only

For some reason my scriptalicious ajax code works beautifully for dragging and dropping in firefox but when it comes to Internet Explorer I'm getting a weird error:

'tree' is null or not an object at line 935Here's line 935: if (options.tree) {

I'm still trying to figure out what is going on...

**** fixed it. The problem was I had another element on the page with a name="x" and my draggable item had id="x". So since there was a conflict the error occurred.

Solution: Check to see if the id is unique (also not used as a name value).