I see the dot.  That was just an issue with the code I posted here.  It turns out the actual issue is that I was trying to build creeps with more than 50 body parts.  Didn't realise that was too many.

I am seeing -10, ERR_INVALID_ARG when calling create creep.  An example of my code is 

Game.spawns.Spawn2.createCreep([WORK,WORK,WORK,CARRY,CARRY,CARRY,MOVE,MOVE,MOVE.MOVE,MOVE,MOVE], null, {role:'harvester', homeRoom:'W48N19'})

This worked as recently as yesterday but now it's throwing the error.

Smaller bodys seem to work ok.  I have plenty of resources available.