Doogal was one of the more notable recent CGI flops. Mostly because it was "re-interpreted" by that master witticist, Butch Hartman. If you think I've been hard on him, movie critics were worse. And they're so good at disembowelling lousy writers, they get paid for it.
And speaking of paying, if you want to see what moviegoers thought of Doogal, go to Yahoo Movies, type in the title in the User Reviews search box, and read the commentaries there. That should give you a good sampling of what went wrong with that movie, from a source perhaps more credible than movie critics (who, as I mentioned, are paid to see lousy movies. Moviegoers, on the other hand, lose money on the deal.)