             open.orderOut(sender)
             let urls = open.urls
             for url in urls {
+                if url.isFileURL && isSandboxed() != storeBookmark(url: url) {
+                    Swift.print("Yoink, unable to sandbox \(url)")
+                    return
+                }
+
                 if viewOptions.contains(.t_view) {
                     _ = openFileInNewWindow(url, attachTo: sender.representedObject as? NSWindow)
                 }

    func saveBookmarks() -> Bool
    {
        //  Ignore saving unless configured
        guard isSandboxed() else
        {
            return false
        }

        if let path = bookmarkPath() {
            return NSKeyedArchiver.archiveRootObject(bookmarks, toFile: path)

    func loadBookmarks() -> Bool
    {
        //  Ignore loading unless configured
        guard isSandboxed() else { return false }

        let fm = FileManager.default
        
