"DACKIT" seems to be a copy/paste error. The guardian logs show that line as the channel H1:ISI-HAM6_DACKILL_RESET. This channel does not seem to be in the current model, but Hugh was looking to make some changes to that tomorrow, I don't believe he has done them yet though...
I'll investigate with Hugh when I find him.
So that channel really does not exists. It was taken out of the model back in May alog27088, but this particular bit of code in OMC_LOCK was under a conditional looking at H1:SYS-MOTION_C_FASTSHUTTER_A_STATE == 1. Jenne was running some of the OMC_LOCK states by hand before this error occurred and must have "set off" this conditional.
I removed the stale code and double checked with Hugh and commissioners. The new code is loaded in and should be good to go.