Perhaps you need to read my first post and then skip over the others and read this last post.
I had a 64 bit Java installed when I first had problems after downloading and using the 0.2 launcher.
One of the first things I did after the launcher.... didn't do squat, was go SERCH the forums for a fix, this serch gave me the impression I now needed Java 7.2 or 7.3 for the launcher to run properly.
Following this advise Bjorke'd my .technicssp and also my .minecraft as well as breaking my Java association with .Jar files.
After UNINSTALLING all Java on my computer and everything minecraft related the auto-detect and installer at the Java site installed a 32 Bit version without me knowing it was a 32 bit version, on checking version after my vanilla Minecraft... didn't do squat, I discovered this flaw and installed the 64 bit version over top of what had AUTOMATICALLY been installed by the auto-detect and install Java software.