We've just uploaded a new beta build to the 'latest' branch. This build uses the latest version of Unity, which we'd like to test. We've been stuck on an older version of Unity for a long time now, since for some people, the newer versions caused random crashes.
We're hoping the latest version has fixed this bug, so if you're willing - ESPECIALLY if you experienced these random crashes previously - it'd really help us out to see if people still get these crashes!
Any and all help greatly appreciated :)