After upgrading to Yosemite 10.10 via the AppStore (no new/clean install), I get a blank page when previewing a website with Codekit 2. In the "Server" tab the Bonjour Hostname in my case "lukas.local" is missing since the upgrade.
Any ideas how to expose my Bonjour hostname correctly again? Thanks!
Check your HostName - I had the same issue;
sudo scutil --get HostName
If you don't get back an expected result (ie. lukas.local) change it... along with the ComputerName and LocalHostName if they need changing...
sudo scutil --set ComputerName Lukas
sudo scutil --set LocalHostName lukas
sudo scutil --set HostName lukas.local
Restart the CodeKit servers.
Hope that helps someone at least.