Minecraft: No se me instala el minecraft

Me aparece esto que hago:

Couldn't download https://s3.amazonaws.com/Minecraft.Download/libraries/tv/twitch/twitch-external-platform/4.5/twitch-external-platform-4.5-natives-windows-${arch}.jar for job 'Version & Libraries'
java.lang.RuntimeException: Server responded with 403
	at net.minecraft.launcher.updater.download.Downloadable.download(Downloadable.java:85)
	at net.minecraft.launcher.updater.download.DownloadJob.popAndDownload(DownloadJob.java:102)
	at net.minecraft.launcher.updater.download.DownloadJob.access$000(DownloadJob.java:10)
	at net.minecraft.launcher.updater.download.DownloadJob$1.run(DownloadJob.java:84)
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

Gave up trying to download https://s3.amazonaws.com/Minecraft.Download/libraries/tv/twitch/twitch-external-platform/4.5/twitch-external-platform-4.5-natives-windows-${arch}.jar for job 'Version & Libraries'
Job 'Version & Libraries' finished with 26 failure(s)!