Sir Anthony Hopkins is reportedly causing problems on the set of ‘Thor’

British-born actor Sir Anthony Hopkins, who plays the role of Odin in the movie, is said to be directing his co-star Chris Hemsworth, who is struggling to deal with the criticism.   An insider told the New York Daily News newspaper: "Anthony has not tried to hide his disapproval of Chris’ acting skills. Chris is definitely the least-experienced actor on set, but he’s trying.   "He respects Anthony a great deal, and it looks like he’s trying to grin and bear all of his criticism."

However, director Kenneth Branagh is apparently getting annoyed at Anthony’s pessimistic attitude.   The source added: "Anthony keeps complaining that they’re shooting too many scenes inside the Los Angeles studio and not enough on location.   "He isn’t used to this kind of work, and his pessimism is really starting to wear everyone down."

Problems are also continuing on set because of the level of technical expertise needed, with some scenes currently being shot in New Mexico taking longer than had been anticipated.   The insider said: "Everyone is cranky and frustrated that it’s taking so long. But it’s a very high-tech movie, and it just takes time to get things right."   ‘Thor’ – which also stars Samuel L. Jackson as Nick Fury and Natalie Portman as Jane Foster – is due for release in the UK on May 20, 2011.  Photo: Fame Pictures