I placed 12.04 on usb with yumi. grub loads fine, and upon choosing either 'try it' or 'install it', code runs up the screen. display of text disappears as normal, but then it hangs up and the caps ...
I use a program called yumi from pendrivelinux.com to load all my Linux distros from a USB thumbdrive. They just updated their installer to support the newest 12.04.1 released a couple days ago. ...