VIENNA (AP) — An outdoor concert in Vienna that had been billed as the major global tribute to Michael Jackson has been moved to London and postponed until June, organizers said Friday, saying they needed more time to put together the show.

Event promoter Georg Kindel and Jackson’s brother Jermaine told reporters that too many top performers had scheduling conflicts, and they blamed the media for stirring up a negative atmosphere.

Friday’s announcement came at the end of a turbulent week of reports that supposedly confirmed artists including Mary J. Blige, Chris Brown and Natalie Cole couldn’t make the event. Many invited artists had scheduling issues, and “maybe we underestimated these issues,” Kindel said.

“The purpose for this show is to give something back to the fans … we have to do this right,” Jermaine Jackson said, at one point using a tissue to dab at one of his eyes.

“It’s not about name-dropping,” he added, answering critics who had complained that megastars such as Madonna didn’t figure among the headliners.

The original plan had been to stage the tribute Sept. 26 outside a 17th century palace in Vienna. Instead, Kindel said, it will be held at London’s Wembley Stadium sometime in the first half of June 2010.

Everyone who bought tickets for the scuttled Vienna event will get refunds, he said.

Some fans had paid up to 512 Euro ($745) for VIP seats, and many expressed unhappiness that no major stars had been confirmed. Among the other performers said to have been confirmed were Sister Sledge, Akon and German boy band US5.

Kindel told reporters that the decision to move the event out of Vienna was made partly because “renowned artists of the tribute were disrespectfully treated as B-list artists or even losers.”

He said tickets to the London concert would go on sale Dec. 1 and begin at 44 pounds ($73).

The city of Vienna, which considers the tribute a potentially huge tourism boost, had pledged up to 600,000 Euro ($870,000) to help underwrite the cost of diverting traffic, providing security and producing a promotional video.

But on Friday, deputy mayor Renate Brauner said the city had withdrawn the offer.

“Not a cent will be given to the promoter,” public broadcaster ORF quoted her as saying.

Copyright 2009 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.