Brad Pitt’s zombie flick “World War Z”, which is based on the acclaimed novel of the same name by author Max Brooks, is quickly spiraling out of control. The film s rumored to be quite different than the source material, a fact which has not settled too well with those who adore the book. However, fan reaction to the film is currently the least of the production’s problems.

Although the film wrapped production weeks ago, screenwriter Damon Lindelof has been tapped to rewrite the script, which will include alterations to the picture’s finale. Additionally, director Marc Foster is scheduled to return for seven weeks of reshoots, which, as everyone knows, is never a good thing. However, Paramount’s Adam Goodman doesn’t appear to be too concerned about such things.

“The footage from this film looks fantastic, but we all agreed it can have a better ending,” Goodman said of the reshoots. “Getting the ending correct is essential, and we are in that creative process. World War Z is a giant summer movie and we are confident it will be a global hit when it’s released June 2013.”

Produced by Pitt, “World War Z” has faced a number of problems during filming, including a raid on a prop warehouse by the Hungarian anti-terrorism unit. According to the Hollywood Reporter, a source close to the production stated that Marc Foster was essentially out of his element while shooting the picture.

“The director was not empowered. There was nobody that steered the ship,” the source explained. “When you get [a director] who can’t do it all, you get a struggle as to whose is the singular voice. They just couldn’t get it right. There was a lot of spinning of plates, a lot of talking. [But] they did not have a plan.”

In order to make changes to the film’s final act, Paramount has moved the release date from December 21st, 2012 to June 21, 2013. Earlier this year, the studio bumped “G.I. Joe: Retaliation” from its original June 2012 release to March of 2013 in order to convert the film to 3D and add increase Chaning Tatum’s screen time.