The producers of "Spider-Man: Turn Off the Dark" have pushed the opening night of the troubled musical back again—this time to March 15 to allow the cast more time to work on the show and to add a new ending. The delay marks the fifth time the opening night for the production has been delayed.

“Spider-Man: Turn Off The Dark" is ten-times more complicated to teach than anything else, and the preview schedule allows for only very limited rehearsal time (twelve hours per week)," one of the show's producers Michael Cohl said in a press statement. "We simply need more time to fully execute the creative team’s vision before freezing the show. I picked a date in March that allows me to ensure that this will be the final postponement.”

The show's director Julie Taymor added: “We are so grateful for the enthusiastic audiences who have been coming to see "Spider-Man: Turn Off The Dark" and we are dedicated to giving them the very best show we can.”

The show was originally scheduled to open last February. That date became December 21, then January 11 and most recently February 7. Delays have been caused by actor injuries—four have been injured in rehearsals and preview performances—and Labor Department investigations.

At $65 million, "Spider-Man" is the most expensive show on Broadway. Last week, it narrowly beat out "Wicked" as the show that made the most money in a week on Broadway. The score is by U2's Bono and the Edge.

Producers also announced Thursday night that scheduled performances on January 18 and 25 have been cancelled. Ticketholders can get refunds or exchange their tickets.