This morning I tried using pcalc on my AppleWatch & it refused to launch. I'd see a quick flash of the "42" and then it would disappear. I used it last a couple weeks ago with no problem. I verified I'm running the latest version on my iPhone, and I don't see a way to independently verify the version on the watch. I uninstalled it from the watch and reinstalled it and it still won't launch correctly. Suggestions??