Hi, Phil
Are there any other pin's like an Enable or Disable Pin.
Your Printer port address is set to Ox3bc is that correct most are Ox378 for #1 port. is it an Add on card.
Make sure your Printer cable is a straight through cable and that pins 18-25 there gnd pins, are transfering the gnd line through to your
servo control.
Make sure that your cable isen't a serial 25 pin cable, Parr. port cables pins from end to end 1,1 2,2 3,3 4,4.........25,25.
Try this XML I changed the port to Ox378, put some debounce in config general inputs and set the tool path to last to current.
There probably needs to be an Output Pin to enable your drives, i gess you sed its manual though.
Servos with encoders and motor polarity reversed will run and trip after the error buffer is full could be whats going on hear, thy should sync right up and
hold position not change direction.
Give this a try, Chip