I installed the packages from vivid-proposed in wily and it works fine.
Sebastian, do you have a Facebook account configured in System Settings -> Online Accounts? Is shotwell enabled for that account?
When you click on "Add more accounts" the Online Account page from the System Settings should appear; unfortunately that can take a few seconds, and indeed the shotwell dialog is closed immediately, therefore giving the impression that nothing is happening.
I installed the packages from vivid-proposed in wily and it works fine.
Sebastian, do you have a Facebook account configured in System Settings -> Online Accounts? Is shotwell enabled for that account?
When you click on "Add more accounts" the Online Account page from the System Settings should appear; unfortunately that can take a few seconds, and indeed the shotwell dialog is closed immediately, therefore giving the impression that nothing is happening.