Hope I'm in the right forum:
Been using mach3 for a long time. Installed it on a new computer, still running XP. Been using spindle stop/start, m3, m5, f5 to toggle the spindle for some time. On the new computer I've got trouble. Seems m3 and m5 work but f5 only starts and stops the spindle once. After that the yellow spindle indicator continues to blink yellow and spindle control is lost. MIDI m3 and m5 still work. Some glitch in the software is causing me trouble. Once again, f5 toggles the spindle on or off only once and then becomes ineffective. M3 and m5 always work. Help.
I posted this idea twice by mistake. Sorry.