uc100 and mach3 estop won't reset

[jdm033056]

I've set all ports and pins. Both lights are on on the uc100. I loaded both Mach 3 and uc100 with ucx00 setup. I'm running Mach 3 in demo for now. As far as I know all was done right. When I launch Mach 3 both lights come on on the uc100. When I click on e stop reset nothing happens, it stays on. History shows this

Sun - 19:01:01 ---Program Startup
Sun - 19:01:04 ---ReConfiguration Estop.
Sun - 19:01:16 ---command killed due to buffer error.

What do I have set wrong? Running Windows 7. Any help?

[cncdrive]

Please email Machsupport about this problem, because it looks like a Mach3 software issue and not a UC100 problem.
I've read after the mentioned "command killed due to buffer error." and what I found that it is something about a Mach3 to computer compatibility issue, but please ask Machsupport, they should know more about this issue.

[jdm033056]

Thank you