How (Technically) has Billy Elliot been doing lately?

Let me explain, I was supposed to see the show 10/14, but of course that was cancelled, so I'm finally seeing the show tonight. One question, have most of the technical problems been fixed? I know I read in a few reviews since the cancelled performance that it has broken down, but recently? I'm just curious to know, and I certainly don't want to have a performance cancelled AGAIN (Let's just say I expect a lot more than just a refund)