i cant click bukkit plugins i get this message
file_get_contents(): php_network_getaddresses: getaddrinfo failed: No address associated with hostname
From what I can tell, their auto-installer is not working right, but you can get those same files from bukkit.org or spigotmc.org and then install the jar files by dropping them in your plugin folder when you connect via FTP. You can do that from Multicraft or from an FTP client like FileZilla.
Like what @aikainnet said, if our auto installer is not currently working, you can always upload the files in the FTP under the plugins folder.