CKEDITOR is not defined?
Yeah, I can confirm Molots statement.

Try to use CKEditor 3.5.3 with the newest Wysiwyg.
Even with patches I could not solve the problems between CKE 4 and wysiwyg.

regards,
SuperEngineer 64

EDIT: Also possible is to install the Develpoment-Version of Wysiwyg. I use it mit CKE4 now.