The opening night of the new Spider-Man musical on Broadway has been delayed a month due to "unforseeable setbacks".
Producers have pushed the official first night back to 7 February to allow the cast and crew more time to prepare.
"It has become clear that we need to give the team more time to fully execute their vision," lead producer Michael Cohl said in a statement.
The show has been beset with problems, including a lead actor getting injured during a preview show.
Natalie Mendoza, who plays "spider goddess" Arachne, was hit in the head by a rope and suffered a concussion during the first performance on 28 November.
The start of previews had previously been delayed five times because of technical glitches.
"I have no intention of cutting a single corner in getting to the finish line," Mr Cohl said in a statement.
A spokesman for the show would not disclose which elements of the musical still need work.
The $65m (£42m) production - the most expensive ever staged on Broadway - features music written by Bono and The Edge of U2.
It has a 41-member cast, 18 orchestra members, several complicated sets and 27 daring aerial stunts.