Spotlight server is disabled on OS X 10.10

My Spotlight Server seems to be disabled. Trying any mdutil commands result in:

sudo mdutil -a -i off 2015-01-23 21:36:57.318 mdutil[65971:6745925] Metadata.framework [Error]: mdsCopyStorePaths failed: (268435459) (ipc/send) invalid destination port Spotlight server is disabled.

If I type:

sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist /System/Library/LaunchDaemons/com.apple.metadata.mds.plist: Operation already in progress

If I type:

ls -l /System/Library/LaunchDaemons/com.apple.metadata* -rw-r--r-- 1 root wheel 1619 23 Ott 08:07 /System/Library/LaunchDaemons/com.apple.metadata.mds.index.plist -rw-r--r-- 1 root wheel 1675 23 Ott 08:07 /System/Library/LaunchDaemons/com.apple.metadata.mds.plist -rw-r--r-- 1 root wheel 922 23 Ott 08:07 /System/Library/LaunchDaemons/com.apple.metadata.mds.scan.plist -rw-r--r-- 1 root wheel 856 23 Ott 08:07 /System/Library/LaunchDaemons/com.apple.metadata.mds.spindump.plist

If I type:

host:~ administrator$ sudo mdutil -i off / Password: 2015-01-23 21:14:58.916 mdutil[65243:6740017] Metadata.framework [Error]: mdsCopyStorePaths failed: (268435459) (ipc/send) invalid destination port Spotlight server is disabled. host:~ administrator$ sudo rm -rf /.Spotlight* Password: host:~ administrator$ sudo mdutil -i on / 2015-01-23 21:23:22.490 mdutil[65543:6742706] Metadata.framework [Error]: mdsCopyStorePaths failed: (268435459) (ipc/send) invalid destination port Spotlight server is disabled.

What can I do?