So I accidentally erased some stuff in Cache in my Library Folder. I went to restore Library to how it was an hour ago (when it was fine) and in the middle of "replacing" the Library I have now it says I don't have permission to do that. I NEED to restore the Library to how it was an hour ago...how can I do this? It erased all my browser settings/toolbars/extensions/settings and everything because it stopped half way through. Please help me.