I've changed a wrong parameter in my nova.conf, deleted my temporary files, reset / restart Firefox and now it's solved.
** Changed in: horizon Status: Incomplete => Invalid -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Dashboard (Horizon). https://bugs.launchpad.net/bugs/1314384 Title: The popup don't appear when click on 'Launch an Instance' Status in OpenStack Dashboard (Horizon): Invalid Bug description: When I click on 'Launch Instance', just "Loading ... " screen is displayed infinitely. I press 'Escape', I click on another control button, this other popup is displayed. When I close (or valid) this new popup, I can see the popup 'Launch an Instance' , like it was in background.. After that, even when the 'Instance' popup is displayed, the Tabs (Access&Security, Networking..) are displayed all-in-one tab.. I've tried Horizon with Firefox 26.0 on Linux Mint and Windows 7. This bug is not blocking : Deployment by Horizon (or by nova boot) works perfectly ! To manage notifications about this bug go to: https://bugs.launchpad.net/horizon/+bug/1314384/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp