Ye sorry my fault worded it wrong should have said make sure un-ticked.

Sorry about this but I know what your problem is but must have had brain failure.!!! . . . . . . In ports n pins set the out put your using for spindle to Pin 4 not pin 12.!! . . . . It's a cock up in the manual and to make it worse I was the one who told CSlabs about it so should have known better.!!

For instance if you set M3 in spindle control to output #1 then go into outputs and set output #1 to pin4.