I successfully uninstalled HDM 14 and Media Builder software. Rebooted. No problem installing and running HDM 15 Suite (Windows 8.1 64) However The RMB Wizard never completes. After inserting the USB flash drive, it starts writing to USB drive and quickly gets to about 75% (see attached picture). Then it just sits there. So I can't create a boot usb. Any help or suggestions?