everytime he tries to run minecraft on a new version this message pops up:
Unable to save download. 1.8.json
Name: 1.8.json
URL: http://s3.amazonaws.com/Minecraft.Download/indexes/1.8.json
Error details: Attempting to move successful download to C:/Users\Admin\AppData\Roaming\.minecraft\assets\indexes/1.8.json
The process cannot access the file because it is being used by another process
Filename on disk: 863e-a227-4ee0-ed4e
Path: C:\Users\Admin\AppData\Local\Temp\863e-a227-4ee0-ed4e
Exists: file
everytime he tries to run minecraft on a new version this message pops up:
Unable to save download. 1.8.json
Name: 1.8.json
URL: http://s3.amazonaws.com/Minecraft.Download/indexes/1.8.json
Error details: Attempting to move successful download to C:/Users\Admin\AppData\Roaming\.minecraft\assets\indexes/1.8.json
The process cannot access the file because it is being used by another process
Filename on disk: 863e-a227-4ee0-ed4e
Path: C:\Users\Admin\AppData\Local\Temp\863e-a227-4ee0-ed4e
Exists: file
everytime he tries to run minecraft on a new version this message pops up:
Unable to save download. 1.8.json
Name: 1.8.json
URL: http://s3.amazonaws.com/Minecraft.Download/indexes/1.8.json
Error details: Attempting to move successful download to C:/Users\Admin\AppData\Roaming\.minecraft\assets\indexes/1.8.json
The process cannot access the file because it is being used by another process
Filename on disk: 863e-a227-4ee0-ed4e
Path: C:\Users\Admin\AppData\Local\Temp\863e-a227-4ee0-ed4e
Exists: file
Did he try restarting his PC?
yes he has
http://www.minecraftforum.net/forums/support/unmodified-minecraft-client/2827415-1-12-faqs-read-before-posting