small fix

app/controllers/admin/admin_modules_controller.rb

@@ -176,6 +176,8 @@ class Admin::AdminModulesController < OrbitAdminController
 				images << image if !image.nil?
 			end
 			p[:module_show_files] = images
+		else
+			p[:module_show_files] = []
 		end
 		p
 	end