They assemble to fight foes that no single superhero can handle, but even the combined forces of Superman, Wonder Woman, Batman and the rest of the Justice League proved no match for their greatest enemy yet -- the [article id="1573641"]Writers Guild of America[/article]!

DC Comics' greatest crime-fighting team has been put on indefinite hold, Variety reports, as Warner Bros. has decided not to move forward with its planned [article id="1571919"]"Justice League of America" movie[/article].

Due in large part to the impending dissolution of the Screen Actors Guild contract (which ends in June), the studio had set Tuesday as its point of no return to green-light the highly anticipated film. Instead, it's highly doubtful the movie will begin filming before the summer or fall at the earliest -- if at all.

According to Variety, Warner Bros. had several reasons for not green-lighting the project, chief among them, the article says, that the studio didn't get official word from Australia regarding necessary tax breaks.

It's nearly impossible, however, to minimize the importance the ongoing writers' strike might have also had on the project's temporary derailment. Although WB execs say publicly that they love the script from Kieran and Michele Mulroney, they also claim it needs to be tinkered with -- something that is impossible during the strike.

Interestingly, in an announcement about the momentary hold of the flick, Variety gave the first official confirmation that several long-rumored actors were involved in the project, including Megan Gale as Wonder Woman, Armie Hammer as Batman and Adam Brody as the Flash. According to Variety, Warner Bros. let these actors know late Tuesday that their options would not be exercised -- meaning Brody, Gale and Hammer are not legally bound to the film and are free to leave the project to pursue other opportunities.

Surprisingly, given the anticipation a "JLA" film could generate, the announcement seems to have been met by fans with a series of cheers rather than boos. Many deemed the film's castmembers too young -- on message boards and blogs across the Net (including ours), they were derivatively called the "JLA Teen Titans." But just because WB let the options on the actors' contracts lapse, that doesn't mean the studio is heading in a different direction for the film, Variety reports. According to the article, WB is still interested in ultimately making the flick with its current cast.

Check out everything we've got on "Justice League of America."

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