The producers and creators of “Groundhog Day” must be uncomfortably aware by now that, despite the fantasy at the center of their show, every day really is a new day — and not necessarily a happy one.
The musical has hit a few speed bumps since it began previews. The first had to be performed as a concert, essentially, when mechanical trouble struck. At the first press performance the set malfunctioned again. The next night, just three days before opening, Andy Karl, who plays the central role, injured himself during the show, necessitating a canceled performance and an understudy onstage at the last press preview.