[Plugin: 012 Ps Multi Languages] Cannot install, probs with config.php

Give me the error about renaming _config.php in config.php, in both places, which I did, but when I return to the “plugin editor”, he seems to still see the files with the “underscore” _ …

Any ideas what’s happening ?

TIA !!

http://ww.wp.xz.cn/extend/plugins/012-ps-multi-languages/