Comment 3 for bug 1665851

please check your heat-engine.log

As soon as you start heat-engine check if you have the following ERROR likes:

ERROR stevedore.extension [-] Could not load 'glance': No module named openstack.common.apiclient
ERROR stevedore.extension [-] Could not load 'glance.image': No module named openstack.common.apiclient

if you do have this error check the version of glance client installed on your system.

In my case I had a glance client version 2.6.0 installed in /usr/local/lib/python2.7/dist-packages/glanceclient/ that triggered this error.

Installing the glance client from packages at version 2.0.0 fixed the problem for me.