I have some files that can be found by name and by content using Finder's command-F that I believe used to be associated with the adblockplus Firefox extension (AKA formerly system files in the Library folder). These files do not have a file path, and I cannot open the enclosing folder etc. I don't actually care about using these files, I just want to delete them. However I cannot drag them to trash, nor can I delete them using command-delete. I cannot drag them into Terminal to find the file path or delete from within Terminal. Does anyone have a suggestion for deleting these files? OS X 10.8.1; screenshot is included.