Possible out of bounds.

@kopareigns

"Error: <<set>>: bad evaluation: Cannot read property 'slaveName' of undefined <<set _lastAnalVirgin = _msAnalVirginIdx.pop(), _otherNames = _msAnalVirginIdx.map(function(idx) { return $slaves[idx].slaveName; }).join(", ")>>"

in reBusyMasterSuite.tw.