Unable To Complete Installating Ubuntu Within VirtualBox

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http://askubuntu.com – I have a brand new install of Ubuntu 12.04.3 on a laptop and then installed Virtualbox from Ubuntu Software Center. I want to do testing within Virtualbox but can't finish the install. First install was using all default values. Then I changed it to the following: Virtualbox base memory: 512MB Virtualbox video memory: 64MB acceleration: 3D I ran the install twice already and it stops at the same point. The status shows "copying files" and it stops about 70% of the "Where are you?" map screen. Using same iso for virtualbox install as the one I used for the laptop. Help! (HowTos)