The opening of the new Spider-Man musical on Broadway has once again been delayed for the fifth time to allow for more time to fine-tune aspects of the show, including the new ending.

Spider-Man: Turn Off the Dark is considered the most expensive production in Broadway history costing about $65 million.

The show had been scheduled to open in February. But, now it has been postponed to March. Along with the delayed opening, the preview performances on Jan. 18 and Jan. 25 have been canceled.

The show has already been weighed down by several problems, including four serious injuries during rehearsals and the quitting of lead actress Natalie Mendoza. She was replaced by T. V. Carpio.

The massive cost of the show, including a 41-member cast and 18 orchestra members, indicate that the theatre will have to sell out every show for several years just to break even as the weekly running bill itself comes to the tune of about $1 million. Now, the postponement will push the cost of the show even higher.

On the positive side, despite its fraught preview performances, ticket sales shot through the roof the day after the preview, with more than one million dollars of ticket sales in one day. During the first full week of 2011, Spider-Man had the highest box-office gross on Broadway at $1,588,514.

Producers Michael Cohl and Jeremiah Harries in a statement said, 'this will be the final postponement'.

Spider-Man: Turn Off the Dark is a rock musical with music and lyrics by U2's Bono and The Edge and a book by Julie Taymor and Glen Berger. The musical is based on the Spider-Man comics created by Marvel Comics.

The most expensive Broadway production in history, the show includes highly technical stunts such as actors swinging from webs and several aerial combat scenes. At the first preview performance, these technical challenges caused several lengthy interruptions.

The musical began previews on November 28, 2010, at the Foxwoods Theatre on Broadway, with the official opening night originally scheduled for February 7, 2011. The creative team includes direction by Taymor, choreography by Daniel Ezralow, with scenic design by George Tsypin, costumes by Eiko Ishioka and lighting by Donald Holder.

The original cast stars Reeve Carney in the lead role, with Jennifer Damiano as Mary Jane Watson, Patrick Page as the Green Goblin, T. V. Carpio as Arachne, Michael Mulheren as J. Jonah Jameson, and Isabel Keating as Aunt May.