Got the following from
www.pinkfloyd-co.com/disco/pulse/pulse_trivia.html :
"Between Oct 12 and 29, 1994, Pink Floyd performed the end of The Division Bell tour at Earls Court, in the U.K.
...
The proceeds from all 14 of the shows performed (one was cancelled due to seating collapse) were donated to benefit Greenpeace, Amnesty International and other groups.
...
At the first Earl's Court show, Oct. 12, during the intro, a section of seating collapsed, injuring some fans, but fortunately none were hurt seriously, the show was cancelled for that night."