The new MacOS 10.7 Lion has been out for a while now, and we can confirm that Resolume is running fine on it. Some people are reporting problems with registering, but this seems to be unrelated to Lion directly. It can be fixed quite easily (thanks to early adopter StickyGreen on that one). We're working on fixing this permanently, but in the meantime you can contact us (mail-at-resolume-dot-com) if you're having problems with this.
And as always, be cautious when upgrading. If you're a live performer, depending on software for your bread and butter, it's usually not in your best interest to be the first kid on the block to have the shiniest new OS. Don't decide to upgrade 2 hours before your big show. Take a quiet day to do it, and make sure you have backups at hand.
And in the meantime, any guesses on what the next MacOS will be called?
