You selected
[x] Enable Winamp DSP plugins and
[x] Enable advanced plugins support ?
And as asked before: Did you try with a mediafile loaded?
And (again) why not try using BS.Player's own built-in equalizer?
http://bsplayer.com/forum/viewtopic.php?p=20006#20006 http://bsplayer.com/forum/viewtopic.php?p=18241#18241