Minecraft.jar downloading problem

[Cheremenin]

The new launcher won't download the minecraft.jar for some reason.

I add the pack (i.e. Plus+/Plus Sigma/Big Dig) from an URL, try to launch it, it downloads minecraft.jar three times and then gives me this, and crashes. Also happens with all the other default packs and even with vanilla MC.

http://pastebin.com/L98LL0BH

UPDATE:

Nevermind.

1.5 just came out, so we'll just have to wait for the downgrader.

By the way, now i have a question about the platform launcher, how does it tell what MC version is required for the pack? Is it hard-coded so that the (custom) pack itself tells the launcher what MC version to download?

[Teraku]

The modpack creator decides which version it's for.