Liveusb also gave me loading problems. Unetbootin works great but no persistent choice. I did advertise some software above, but have not tried it yet, i might give it a blast and report back findings in a while
Right i used the software as i advertised above, I got an image of Backtrack5 Gnome 64bit. added the Persistent Mode in the software which i think was about 1.6gb (Max left). Install to USB Pen went smoothly and had no problem booting it. So seems this is nice software and Free.
Hope it helps others for this problem.