Isn't it Liv Taylor? Not sure I see her as the main problem with TIH film, but she did not help matters much. Edward Norton was not too great in that one either.
It is not a bad movie but it is flawed. Probably the worst of the Marvel Studios movies IMO. Or at least the one that people seem to forget about the most.
Every time they make a Hulk movie, it's like they start with a new story; one that's not even close to the Hulk's history. Even in this Thor movie, they couldn't or wouldn't get Planet Hulk right.