For reference, the error message generated was:
/home/symbly/www/d20-api-server/node_modules/firebase/lib/firebase-node.js:1
orts, require, module, __filename, __dirname) { function g(a){throw a;}var j=v
^
ReferenceError: version is not defined
at Object.WeightedDice.CheckInstall (evalmachine.<anonymous>:986:34)
at Sandbox.<anonymous> (evalmachine.<anonymous>:1062:15)
at eval (