Ok, I am having the same problem but for the vanilla minecraft setting. I'm trying to use it as an easy way to downgrade to 1.3.2 for a server I play on. I made sure to download a 1.3.2 minecraft.jar, and changed the name to minecraft_1.3.2.jar
The errors don't change.
Launcher/pack Version:1.013
Operating System: Windows 7 Professional 64-bit
Version of Java:1.6.0_31
Description of Problem: when you use a migrated Mojang account, the profile on the left shows the default skin
Error Messages: none
Link to pastebin of log: none