EStackOverflow with two instance of TVLMotionDetect
WANG

I am using latest 3.0 version. When I run two instance of TVLMotionDetect at same time(for two camera input), the program exits with exception "EStack overflow" after running for half an hour. If I only run one instance, I don't have this problem.
I ahve two TVLMotionDetect components on the form: MD0 and MD1. I also have two TVLGenericFilter (GF0, GF1) to pump frames to motion detector from bitmap images captured from IP camera. Both MotioDetect and GenericFilter Synchronization mode ha sbeen set to stQueue
//SendStartCommand has been run before
for(int i=0; i<=1; i++)
{
GF[i]->Tag=1;
TVLCVideoBuffer ABuffer(B[i]->Picture->Bitmap);
GF[i]->SendData(ABuffer);
}
Is there anything I missed?
Any hekp is greatly appreciated!