Journalists have given the opening film at the Cannes Festival a cool reception at a press screening preview. The 100-million euro adaptation of Dan Brown’s bestseller “The Da Vinci Code“has been eagerly awaited by both critics and the wider public.It is due to be screened at the festival’s opening ceremony on Wednesday. “Nothing works really, it’s not suspenseful, it’s not romantic, it’s certainly not fun,” said Stephen Schaefer of the US newspaper The Boston Herald. “It seems like you’re in there forever and you are just conscious of how hard everybody is working to try to make sense of something that’s perhaps unfilmable,” he added. “If you have read the book you expect a better film from this story,” said Italian critic Margerita Ferrendino. “It’s a shame. The audience didn’t applaud. It was a fiasco, it was complete silence.” The novel has already prompted a wave of protests from some Christians who say the theories put forward by the author are blasphemous. The Cannes Film Festival runs until May 28, promising an eclectic mix of blockbusters, politically-engaged movies, historical adaptations and sexual experimentation.