Pink Floyd star David Gilmour has been forced to call off two concerts in Venice's St Mark's Square after the stage was found to be unsafe.
Gilmour apologised to fans for calling off the gig at the last minute
Friday's gig was cancelled a few hours before it was due to begin, as the defect was only discovered prior to a sound check that evening.
The concerts have been rescheduled for next weekend, according to a statement on the musician's website.
Tickets for the original dates will be valid for the new performances.
"Our most sincere apologies to all those who were supposed to attend these shows this weekend," said Gilmour on Friday.
"A structural defect was discovered in the scaffolding just before the sound check this evening, which has rendered the whole stage structure unsafe."
According to the Italian news agency ANSA, officials discovered that one of the columns supporting the stage was slightly angled, and therefore unable to hold the weight of the lights and other stage equipment.
Gilmour's band, Pink Floyd, caused chaos when they played a televised concert in the square in 1989.
As many as 200,000 fans turned up - almost double the number authorities had planned for - with many climbing onto the balconies and roofs of historic buildings for a better view.
Damage was allegedly caused to columns of the Basilica and the Ducal Palace.
A lack of proper facilities left the site covered in rubbish, and the army had to be called in to help clear up the mess.
Two Venice councillors were later ordered to stand trial for the costs incurred by the concert.