@negativeflare I had this error as well after setting up on a Raspberry Pi (1) only yesterday and running as serveronly.
I found that to fix this I had to upgrade node, as doing an apt-get install for node gave me version 0.10.x or something like that.
I followed this script up to line 26.
https://github.com/audstanley/Node-MongoDb-Pi/blob/master/Install-Node-MongoDb-Pi.sh
But I changed it to the arm6l and version 5 of node.