No puedo abriri Minecraft cuando abro el launcher D:

Amigos cuando abro el launcher y le pongo jugar offline se me carga y me dise esto:

Gave up trying to download https://s3.amazonaws.com/Minecraft.Download/libraries/java3d/vecmath/1.3.1/vecmath-1.3.1.jar for job ‘Version & Libraries’
Finished downloading C:\Users\Ulises Aguilera\AppData\Roaming\Minecraft\versions\1.7.4\1.7.4.jar for job ‘Version & Libraries’: Downloaded successfully and etag matched
Job ‘Version & Libraries’ finished with 26 failure(s)

que hago!?? ayuda porfavor…

Tienes instalado algun mod o algo?