"'NoneType' object is not iterable" error with service env ls :ID

[lifeisfoo]

Hi, calling docker-cloud service env ls :ID on a running service that needs to be redeployed (e.g. after a dcs set --image name:latest :ID) will shows this error message:

'NoneType' object is not iterable

After the service was redeployed all worked nicely.

I'm using docker-cloud 1.0.7