For the first time in its 20 year history, Los Angeles Opera is postponing a premiere – the hotly-anticipated “Grendel” – because of of computer problems with the set. “The $2.8-million show, a co-production with New York’s Lincoln Center and an undertaking that L.A. Opera general director Plácido Domingo has called the company’s most ambitious to date, will still go on. But the official premiere has been pushed back until June 8, at a cost to the company of more than $300,000.”