Just set up the SainSmart 3018 and I cant get the steppers working.

Yes I replaced the plugins folder in the Mach3 directory with the plugins folder provided by SainSmart via CDrom and I moved the mach3mill.xml into the directory.

Not sure what went wrong. Mach3 shows the machine is connected, and when I run the test Gcode the spindle runs, manually turning the spindle on and changing its speed works just fine.

Thanks in advance for the help,

Best,