Launcher 1.2.1

1.2.1 was a launcher version released on August 2, August 6, and August 7, 2013.

Additions

 * Added a warning about using Beta, Alpha, and snapshot versions.
 * Added Alpha versions.
 * Five old Minecraft versions from Classic and Pre-classic have been added to the launcher.

Fixes

 * – Unexpected exception refreshing version list / Play button gray
 * – Launcher does not remember last used profile
 * – Release versions 1.0 and 1.1 aren't available
 * – 1.5 will not launch - " java.lang.ClassNotFoundException: net.minecraft.client.Minecraft"
 * – Selecting Alpha 1.2.0 version launches Alpha 1.2.0_02 instead

启动器1.2.1