peach type error

Hello,

Wondering if someone can tell me whats wrong with this.  I have 2 slaves

this works

{ (neg .z.w)  [((count x) ; x)] } each (100000 cut (select from trade where date=2015.07.23, sym in AAPLGOOG))

but this gives a type error

{ (neg .z.w)  [((count x) ; x)] } peach (100000 cut (select from trade where date=2015.07.23, sym in AAPLGOOG))

other peach queries work