Problem with Winamp plug-ins

[dsp_dee]

Hello. I'm he author of Dee2 plug-in which doesn't work in BSPlayer :(
BSPlayer 0.86 bld 493 doesn't call plug-in sound processing function. The following piece of code should show the message, but it doesn't:

int modify_samples1(struct winampDSPModule *this_mod, short int *samples, int numsamples, int bps, int nch, int srate)
{
	char s[256];
	sprintf(s,"%d %d %d %d",numsamples, bps, nch, srate);
	MessageBox(NULL,"s","s",MB_OK);

The plug-in window is showing. Also I tried to select the other plug-ins, they also don't work.