Fix bug.

app/controllers/admin/archive_files_controller.rb

@@ -111,7 +111,7 @@ class Admin::ArchiveFilesController < OrbitAdminController
         tempfile.write(file_content_info["content"].unpack('U*').map{|i| i.chr }.join)
         v["file"] = ActionDispatch::Http::UploadedFile.new({:filename=>filename,:type=>content_type,:head=>head,:tempfile=>tempfile})
       end
-    end
+    end rescue nil
     @archive_file = ArchiveFile.find(params[:id])
   
     @archive_file.update_user_id = current_user.id