Error installing BT4 R2 on virtualbox

After i select the BT4 iso, i got the message:
Failed to open the CD/DVD image /home/owner/Documents/bt4-r2.iso.
Could not get the storage format of the medium '/home/owner/Documents/bt4-r2.iso' (VERR_NOT_SUPPORTED).
Details:
Result Code:
VBOX_E_IPRT_ERROR (0x80BB0005)
Component:
Medium
Interface:
IMedium {9edda847-1279-4b0a-9af7-9d66251ccc18}
Callee:
IVirtualBox {d2de270c-1d4b-4c9e-843f-bbb9b47269ff}

This has been bugging me for a while. I haven't found any idea that helps anywhere so does anyone have any ideas?

Thanks in advance.

Well a good idea would be to download the VMware version of BackTrack from here and than just import it into VBox as a hard drive.

thank you very much. that worked fine

Thanks for the solution. It took me a while to figure out how to import the BT4R2 Vmware hardrive through VirtualBox.

To anyone who is confused, just create a new machine in Vbox go through the prompts and keep an eye out for the step below. Then click on the little folder and point to where the BT4R2 Vmware hardrive is.

http://i.imgur.com/G4CdK.png

When I trying to this step

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apt-get install virtualbox-3.1 


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I got this error :

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 root@bt:~# apt-get install virtualbox-3.1
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  virtualbox-3.1: Depends: libpython2.6 (>= 2.6) but it is not installable
                  Depends: libqt4-network (>= 4:4.5.3) but 4.4.3-0ubuntu1.4 is to be installed
                  Depends: libqt4-opengl (>= 4:4.5.3) but 4.4.3-0ubuntu1.4 is to be installed
                  Depends: libqtcore4 (>= 4:4.6.1) but 4.4.3-0ubuntu1.4 is to be installed
                  Depends: libqtgui4 (>= 4:4.6.1) but 4.4.3-0ubuntu1.4 is to be installed
                  Depends: libssl0.9.8 (>= 0.9.8k-1) but 0.9.8g-10.1ubuntu2.6 is to be installed
                  Depends: libstdc++6 (>= 4.4.0) but 4.3.2-1ubuntu12 is to be installed
                  Depends: libxml2 (>= 2.7.4) but 2.6.32.dfsg-4ubuntu1.1 is to be installed
E: Broken packages 


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Help me Plz

Have you actually tried to install the dependencies ?
Works perfect here.