BSPeter (17 June): Two more fixes in BS.Player Pro beta 2.54.1037 / 201006171041 !! However also new(ly found) imperfections:
In beta version 2.54.1037 if under Preferences > Subtitles [Subtitle properties]
the slider of "Background color alpha" is moved to the right and then back to maximum left the number indicates 16.
When Preferences-window is closed and reopened it shows 0 (zero).
Also: lang_changes.txt omits to mention that the added lines are for [WID17];
(I personally also added another line to 136H: "Doesn't work if the option 'Transparent background' is selected") And also (more importantly): No translation (not in translation file) for: [Error] Can't save configuration file! Please reinstall with defaults settings or choose folder with write permission.