starman

I have a very old Casio CT-640 keyboard, which I am trying to hook up to my computer using an iConnect Mio MIDI-to-USB adapter. I am able to get the computer to recognize the adapter successfully and can monitor the output using MIDI Monitor or MIDI-OX. However, the first time a play a note no output shows up and after that every time I play a note the output is the value of the previous note I played rather than the value of the current note. Does anyone have an idea of what the issue might be?