Launcher wont work

[hoswpkk]

When i try to launch a mod pack of any type it loads then all of a sudden it posts an error saying

Stack Trace:

Exception: IOException

Message: Failed to download Minecraft! Pack: lapitos-galacticraft Minecraft version: 1.4.7

Trace:

org.spoutcraft.launcher.util.MinecraftDownloadUtils.downloadMinecraft(MinecraftDownloadUtils.java:93)

org.spoutcraft.launcher.UpdateThread.updateMinecraft(UpdateThread.java:319)

org.spoutcraft.launcher.UpdateThread.runTasks(UpdateThread.java:123)

org.spoutcraft.launcher.UpdateThread.run(UpdateThread.java:108)

i have no idea how this happened it worked the other day. i checked the mc website and it was still on line i even runed vanila to see if it had the same error it never happend i think it has to deal with the new 1.5 update. i have no idea whats going on hear if a mod desides to read this try and fix the launcher or give me ideas on how to fix the error report the error above was the lastest one i tryed all mod packs frome tekkit classic to h/m none of them worked not even the vanila option of the launcher

[Salkras]

I believe it is due to the 1.5 release and most of us dont know how to automate a downgrade during the launching of the modpack