I have the same problem as the original poster.
OS is Windows 7 32-bit
Java 7 update 7 installed to default folder, no previous version ever installed
Kaspersky 2012 installed, but disabled during Java install and when downloading or running the launcher
Launcher is the version from this site, downloaded yesterday, file size is 58,880 bytes
Have never had a previous version of the launcher or mod packs, Minecraft account was opened only yesterday, and the game installed. It works fine.
Get exactly the same "stopped working" dialog as original poster, just a couple of seconds after it starts running.
After the error, the %appdata%/.techniclauncher folder has only a logs sub folder with an empty log file, so there's no alternative .jar file to try and use, or any other files either.
Hope that detail helps with debugging.