Minecraft not launching

Unable to save download. ast_ES.lang
Error message ^ also this is the full error message V

Unable to save download. ast_ES.lang
Name: ast_ES.lang
URL: http://resources.download.minecraft.net/1d/1d37a6f67db63ee15ec19f0426a914882bc9aadc
Error details: Attempting to move successful download to C:/Users\Dilli\AppData\Roaming\.minecraft\assets\objects\1d/1d37a6f67db63ee15ec19f0426a914882bc9aadc
The process cannot access the file because it is being used by another process
Filename on disk: 397c-3f09-3080-4f85
Path: C:\Users\Dilli\AppData\Local\Temp\397c-3f09-3080-4f85
Exists: file