I’ve downloaded 1.551 it says the app needs to be updated now. V3 does not work with the new script. I wrote a post here. post Im on mac mojave and having the same problem as @vishesche. I luckily have an old download of V3 i reverted back to but i really wanted Pro to be V3 but better. the loop and beat jump sections in the clip view are practically useless in pro but its perfect in V3. I use to use them together (pro and V3) but now i will be using V3 only until pro is fixed and reliable.