@ochameau @erikvold This line seems to break 3 cfx tests because of `KeyError: 'jetpackID'` do you know where jetpackID key is created ? Or maybe it's problem just in the cfx test ? For example this test fails:

https://github.com/mozilla/addon-sdk/blob/master/python-lib/cuddlefish/tests/test_xpi.py#L243

Although reddit-panel works as expected, even though it does not defines any `preferences`.