xoops_trust_path/modules/protector/configs/configcacheXXXXX): failed to open stream: 
   Permission denied in file (trust)/modules/protector/class/protector.php line 172

chmod 777 xoops_trust_path/modules/protector/configs/
chmod 666 xoops_trust_path/modules/protector/configs/config*
開発用サーバは module版のため？
本番サーバでは 644 にすべき？