When I drag in a folder with many video files in it it seems to cause HandBrakeBatch to crash. It loads somewhere roughly around 50 or so and then crashes. It is not a hard number that it crashes on, I tried dragging the same folder in a few times and it would crash on a slightly different video each time but within a few videos of each other, so it is not any one particular file or folder but seems to be something about the number of videos. Happened again with a totally separate folder of files, too.
OSX Mavericks latest, HBB 2.22.