i upgrade nextgen to V1.9.3,
after this update, i upgrade the langage fie of NG, then i've got a error memory message, and i couldn't acces to the admin of the site.
So i reverse to NG v1.9.2, then it's works but after i update the langage file i get the message error memory. I delete the french PO and MO, and it's okay now
sorry for my bad english