We're just in the process of assembling patch release 18.104.22.168. Code's all written, and we're now going through all the usual deployment procedures.
It's not a big release: in fact, it only contains one bug fix, but we decided it was worth while shipping this to you, as it's quite a nasty one.
As reported in the forums, canceling a render causes Moviestorm to crash, potentially leaving a movie unsaved. This was introduced in 22.214.171.124, released on July 10, when we changed how sound worked during rendering (to fix some other problems), and accidentally introduced this bug by failing to move all the necessary logic to the right place.
We'll get this out as soon as we can.