Hello. We are able to receive a serial response to MediaLab. When "1" is pressed in our other program, MediaLab responds accordingly and continues to the video we want it to play.

The problem is, this only happens once. Later, when we want to respond to MediaLab from a different computer, nothing happens. Does the serial port need to be flushed somehow so our peripheral computer will echo the byte sent?

Thanks for any help.

M