MotionBend version 1.2.3 has just been released. While the main theme for this version is improving how MB interacts with you, there are also a number of internal changes that make this a worthwhile upgrade.
The motion analysis has been modified, now it performs better in situations where there is one small object with few background details and when trying to analyze large motions that change direction quickly. In general, it should be more robust and give good results for more videos.
There are also minor bug fixes and tweaks to most parts of the software. Check the detailed list of changes in the release notes. Have fun with it!