A malfunction could happen to any show with heavy automation, which is nowadays almost every show. Safety always comes first when thousands of pounds of scenery are moving above people's heads.
The more technology you have, the more likely things can break. Its a shame for the audience, but they really have had very few issues.
If we're not having fun, then why are we doing it?
These are DISCUSSION boards, not mutual admiration boards. Discussion only occurs when we are willing to hear what others are thinking, regardless of whether it is alignment to our own thoughts.