I am trying to use Amiga Explorer with my pc laptop and my Amiga 3000 which still has 2.04 os on it. For some reason, when I open my Serial Prefs up on my 3000, the Baud Rate and Input Buffer Size both show a U beside the sliders where the values for each should be. Sliders work but the U never changes. I have tried setting up Amiga Explorer across the null modem cable and I do get some data across to my ram disk but always get an error when I execute the RX command (command not found). I have tried renaming serial.prefs so the system would create a new one but still have the same problem with the U's showing up on the serial prefs screen. Anyone seen this before?