Check system time, just encountered error myself and system time was off.
I was going to leave it at that but now that I'm thinking about it...rubs me the wrong way. DRM (no matter how basic) has no place in a beta.
Sorry but this is not DRM. Most software app's that use a freeby, 30 day trial or professional package, have a registration key that limits or provides full facilities. In this case Mike has decided to provide a 30 day key update, so Yes you have to go and find the key every month (or purchase the package), but I don't find it THAT painful or are you saying that you would prefer Mike to say OK it is now out of ? and you must pay for this package.
Having used this package for as long as I can remember (yes I am getting pretty old!), I decided that as I use it constantly and depend upon it being around, I should pay the guy for his efforts so I purchased the package - so solving the problem.
When I look at the reasonably trivial apps that I have paid for on my IPAD, the cost is trivial compared to the benefit, I actually don't understand why Mike DOESN'T charge for Makemkv, it works.