The UK’s largest indoor arena has postponed launch events with Peter Kay, due to be held this week, after work on its power supply fell “a few days behind schedule”.
"It is critical to ensure we have a consistent total power supply to our fully electric sustainable venue, the completion of which is a few days behind," a statement from Co-Op Live Arena said.
"Rescheduling gives us the extra time we need to continue testing thoroughly."
Kay's performances at the 23,500-capacity venue have been rescheduled to 29 and 30 April.
Kay said: "I'm truly gutted, as I know how disappointing this will be for everyone with tickets - but obviously, it's a brand-new venue, and it's important that everything is finished and safe for full-capacity audiences."
Co-op Live was forced to cancel tickets for 7,000 attendees to a Rick Astley test concert last week after problems with its power supply affected fire safety and the arena’s emergency services communication system. Invite-only ticket holders were only notified of the capacity change a few hours before the scheduled start time.
The £365m venue, backed by City Football Group, Oakview Music Group and minor partners including Harry Styles, Gaiety and SJM, has already attracted controversy ahead of its opening following a licensing dispute with rival 21,000-capacity AO Arena.
Music Venue Trust has also campaigned to have the arena donate £1 of every ticket as a “grassroots levy” to fund local independent venues.