This only happens after I have upgraded to WordPress 3.4. I tested each plugin on blog and this is the culprit.
If I disable tagaroo, I don't get the error anymore.
But if I enable tagaroo plugin I get these errors --
When clicking the full screen mode from post editor:
Uncaught TypeError: Cannot call method 'on' of undefined
When I try to insert link from post editor:
Uncaught TypeError: Object [object Object] has no method 'wpdialog'