dialog in IE causes: 'null' is null or not an object

dialog in IE causes: 'null' is null or not an object


Hi all,
I use jquery ui 1.7.2 with jquery 1.3.2 and when I use the dialog
plugin in IE I get the error: 'null' is null or not an object and
can't be initialized.
The problem seems to be at the creation of uiDialogContent and when
the method .appendTo(uiDialog) is called.
The content of the dialog is a flash object. When I use simple html as
the content I have no errors.