Based on user comments, the hobbled file originated from the European PlayStation Store and has since been bumped off -- to be replaced with a working version soon, hopefully. We'll keep an eye on things (and your comments below) while we await a response from Ubisoft.
Update: Sony has replaced the faulty download and offered replacement codes to those affected.
Source -- Official PlayStation Forums
Source -- EU PlayStation Blog comments
Source -- Youtube video [Thanks, Gian]