Play starts download latest version then crashes with other process error

The following error appears when start play begins downloading latest version :

Unable to save download. ka_ge.lang
Name: ka_ge.lang
URL: http://resources.download.minecraft.net/34/34fc38fc559b2a389fcfbd784b93c915bc4370b5
Error details: Attempting to move successful download to C:/Users\Utilisateur\AppData\Roaming\.minecraft\assets\objects\34/34fc38fc559b2a389fcfbd784b93c915bc4370b5
Le processus ne peut pas acc�der au fichier car ce fichier est utilis� par un autre processus
Filename on disk: 295e-328b-d6af-d09f
Path: C:\Users\UTILIS~1\AppData\Local\Temp\295e-328b-d6af-d09f
Exists: file