Lincoln Center Theatre is the latest theatrical organization to delay a theatrical opening in the aftermath of the terrorist attacks of Sept. 11, and, in the case of the nation’s largest nonprofit, the alteration will mean new start-up dates for all three of the institution’s fall productions: Thou Shalt Not, Everett Beekin and QED.

Lincoln Center Theater said the postponement was due to “delays in the construction and delivery of sets and other production elements, as well as the loss of rehearsal time, caused by the tragic events at the World Trade Center. “

Thou Shalt Not, the new musical by Susan Stroman, David Thompson and Harry Connick, Jr., based on an Emile Zola novel, was set to begin at Broadway’s Plymouth Theatre on Sept. 20. That first performance will now be Sept. 27. The official opening will remain Oct. 25.

Everett Beekin, one of three Richard Greenberg plays to be seen in New York this season, will move back its first preview at the Mitzi E. Newhouse Theater from Oct. 11 to Oct. 19. Opening is Nov. 14. Eyan Yionolus directs. Bebe Neuwirth stars.

Finally, Peter Parnell’s QED, the L.A. hit starring Alan Alda and directed by Gordon Davidson, which is to play Sundays and Mondays (the nights Contact is dark) at the Vivian Beaumont Theatre, will have its first show on Oct. 21 instead of Sept. 30. Opening is Nov. 18. Tickets to canceled performances of Thou Shalt Not and QED can be exchanged for a new date at that ticket's point of purchase.