Its BETA, expect errors, report them - just like with the last Adobe products that have been send public BETA, they too needed work and this is no different.
We will all be better off, if C1 becomes a good product, Adobe and others will have to up their game and so on.
Re Michael, I would say that he give it fair attention, the product isn't currently up to scratch, and there was no need to beat someone lying down. I have a lot of confidence and respect in the reviews and reviewers here. They have to me been spot on, for many years, without missing the beat. So, if you have just dropped in, then take the time to look over things here first. Lightroom is a program that has matured very quickly with a lot of support both here and elsewhere. Its not my tool of choice but the debate about it helps educate me. YMMV
Back to the topic, I couldn't even get it to run on my windoze XP x64 machine but hey no big deal 3.7.7 still works fine and so does ACR4.1 so I can wait and if its a lemon, well I keep my options open
A Dane Down Under - and NO, I don't support C1 because I am danish, but because it has been a great product for the last many years...but other are catching up and some has passed it