I have the Pro version (yes, finally registered!) and among a few issues, the following one: if I load subtitles (srt), only the last one loaded shows, switching to another one previously loaded shows nothing, I need to reload it manually (add it to the list) for it to work. Similarly, if I stop the avi and restart it from the begining, subtiltles disappear.
More issues: occasionally, when starting BSP from an associated file, the video window resizes itself to a small square, a few pixels wide. On other occasions, it goes to 50% zoom, although my previous choice is 100%.
Similarly, often the sound goes to 0 and the mute icon appears when starting a movie.
These issues were not present in the previous version, afaik.