Need some help with my 325-II (Fanuc 21TB) if anyone's run in to this problem or has an idea.

Trying to use the live tools and I'm getting two alarms when I activate the M-codes.

Commands:

M52 (C-axis on)
G97 Sxxxx M13

As soon as the M13 (or M14) is called the live tool engages (I can hear the solenoid) and rotates 1/4 turn then it throws an alarm and the C-axis and live tool disengages.

Alarms:
8132 AXIS ACCESSED BY MULTIPLE CHANNELS
8203 FATAL AC ERROR (0-PTR IPO)

Both alarms are in the programming manual, but are cryptic:

Cause: Internal error
Remedy: Restart software or reinstall when necessary, report to EMCO, if repeatable

I've re-started WinNC, no luck. Happens in MDI and during normal program execution.

Live tools worked last year, but I haven't tried using them in about 10 months. No crashes or major problems/maintenance since they last worked.

Maybe the G-code syntax is wrong? The Emco manual is pretty terrible...

Anyone have suggestions?

Thanks,
Ralph