It never posts to Mach for me either but I have always put it down to not having Mach installed on drive C.
Perhaps Rich would know if the installed drive has anything to do with it.

Tweakie.

with win7 i have been not able to make it work with either the 32 or 64 .
with xp sometimes after a upgrade of mach i would have to uninstall l-cam.
then i would load l-cam ver 2.02 to get it working.then re install the current ver of l-cam.

bill

The only time I had problem with LC not posting to Mach is when LC  was not installed along with Mach OR if I didn't run  LC  from within Mach.
So don't know what to say folks. Can't speak for W7 since I only use XP.
Sorry for not being much help,
RICH

Thanks for looking Rich.

It's no big deal really and as cpayne says - just have to live with it.

Tweakie.

I know this is an OLD topic but I had similar problem and I found the answer.

Go to General Mach Discussion section on this forum and read my post "No Mach3 Found Running"

Now I'm happy again that I can post my gcode to Mach from LC