mozilla/zamboni — comment on commit 6e7255203548ab0795d36a08ed7275f740e52302
File: media/js/devreg/devhub.js line 933
By cvan:

it was because we were initializing `this.preview = new imagePoller();` when we didn't have previews to initialize. so this wasn't working: https://github.com/mozilla/zamboni/commit/6e7255#L3R907