It works for me with 4.04.
If you're using the AdminCP | Advertising locations for the script, you need to go into Manage Ads and Edit and Save each one to reactivate. No need to change anything. just open the edit page and save.
I don't know why but with or without this add-on it seems we have to do this for each ad location with every 4.x upgrade. It's annoying but an easy fix.
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