Mach 3 w/Coolant and Spindle Failing

[webgeek]

This was solved by the wonderful JoeBean in the other forum here (thanks Joe!):
http://www.cnczone.com/forums/novako...ant_issue.html

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Hi all; I posted this question in the Novakon forum a few hours ago but I'm not sure it's the right place so I'm posting the same question here. Sorry for the cross post.

I finally set up my new mill to do flood coolant after milling for a few dozen hours without it. The problem is, as soon as I plugged in the pump (I think) the spindle stopped working in all my gcode programs. I can manually kick the spindle off with Mach still but when I run the gcode, it immediately shuts down again. Now the wierd stuff, if I go into Spindle Control in Mach 3 and check "Disable Flood/Mist Coolant" all goes back to normal with my programs but clearly coolant isn't working at that point. Basically, I can get coolant working via turning it on and off in the diagnostics pane but it kills the spindle or I can have everything run perfectly but coolant has to be disabled.

My question is two fold - what the heck is wrong and how do I fix it?

Thanks in advance. I have a huge amount of milling to do this weekend and I'd REALLY like to get the coolant working so I can use my better end mills. Thanks much for help!

-Mike