All 1.8 modded versions dont work, unmodded do. Not sure about other modded versions.

Whenever i try to run minecraft using a 1.8 modded version, it crashed and gives the following crash report:

Failed to download file. 1.8.json
Name: 1.8.json
URL: http://s3.amazonaws.com/Minecraft.Download/indexes/1.8.json
Error details: UNKNOWN/-118
Filename on disk: 1.8.json
Path: C:/Users\itimu\AppData\Roaming\.minecraft\assets\indexes/1.8.json
Exists: false

It works without mods and other versions, not sure about other modded versions because i dont have them.