Cubism giving "Error" in log but not saying why

[ow]

Hi,

I've set up Cubism with our environment and the machines are correctly being discovered and filled out on the page but I'm getting some sort of non-descript error in the console when they're being drawn:
Error {}

Any ideas why this would pop up?

[ow]

It looks like this is because my requests are failing with 301 "moved" but they seem to be malformed? I'm confused why the URL is attempting to do this.

format=raw&target=alias%28summarize%28host.o1vmbz11.cpu%252C%25271min%2527%252C%2527sum%2527%29%252C%2527%2527%29&from=1375705620&until=1375763339

[ow]

Hmm. I followed the guide here and I suspect my issue is due to the "graphite.metric" value being passed to horizon but hard to be sure. The documentation seems very slim.