Help please. A friend emailed me a locked QT file (or partial since it's showing only 8kb in size). If I select it in column view or open "Get Info" to unlock it, it freezes my Finder; trying to open it in any program freezes them too. How can I delete this locked file which I cannot unlock? It seems to occur when the computer is trying to show a preview. Unfortunately, it freezes before I can do anything. Any help greatly appreciated. Thanks.