Here is my issue: https://discuss.elastic.co/t/kibana-4-5-1-cannot-start-because-of-permission-denied/

I‘ve compared the deb package between 4.5.0 and 4.5.1, and I find that 4.5.1 bundled much more a /opt/kibana/config/kibana.yml and a /opt/kibana/optimize/bundles/ directory.