MacFuse lässt sich nicht installieren

[lerner]

Komisch, in den Sytsemeinstellungen ist das MacFuse Symbol. Wenn ich das anklicke, kommt die Meldung "MacFuse does not appear to be installed". Wenn ich dann versuche, MacFuse zu installieren, kommt wieder diese Meldung.
in der Konsole:
"29.01.11 09:49:09 [0x0-0x87087].com.apple.systempreferences 2011-01-29 09:49:09.456 autoinstall-macfuse-core[1185/0xa0122540] [lvl=2] -[KSUpdateEngine processor:finishedAction:successfully:] processor=<KSActionProcessor:0x219f40 isProcessing=1 actions=3 current=KSCheckAction>, action=<KSCheckAction: 0x21a140>, wasOK=1
29.01.11 09:49:09 [0x0-0x87087].com.apple.systempreferences 2011-01-29 09:49:09.456 autoinstall-macfuse-core[1185/0xa0122540] [lvl=2] -[KSUpdateEngine processor:startingAction:] processor=<KSActionProcessor:0x219f40 isProcessing=1 actions=2 current=KSPrefetchAction>, action=<KSPrefetchAction: 0x21a480>
29.01.11 09:49:09 [0x0-0x87087].com.apple.systempreferences 2011-01-29 09:49:09.456 autoinstall-macfuse-core[1185/0xa0122540] [lvl=2] -[KSUpdateEngine processingStopped:] processor=<KSActionProcessor:0x219f40 isProcessing=0 actions=2 current=(null)>, wasSuccesful_=1
29.01.11 09:49:09 [0x0-0x87087].com.apple.systempreferences 2011-01-29 09:49:09.456 autoinstall-macfuse-core[1185/0xa0122540] [lvl=2] -[KSPrefetchAction performAction] prefetches=(
29.01.11 09:49:09 [0x0-0x87087].com.apple.systempreferences )
29.01.11 09:49:09 [0x0-0x87087].com.apple.systempreferences 2011-01-29 09:49:09.456 autoinstall-macfuse-core[1185/0xa0122540] [lvl=2] -[KSPrefetchAction performAction] No prefetch downloads created."

Was kann ich tun?