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When I try to open install Windows 7 in my virtual machine it shows this error. Can anyone help me to solve this issue?

This is the error shown:

enter image description here

after downloading the extention pack the following error is shownenter image description here

after installing the extention pack for oracle vm virtual box this error is shown enter image description here

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download extension from link below – nux May 18 '14 at 18:09
i have done the same thing now and those errors are displayed on my screen – agha rehan abbas May 18 '14 at 18:10
version mismatch , check your version – nux May 18 '14 at 18:11
how to check it can you give me any command in terminal to get it known sir – agha rehan abbas May 18 '14 at 18:12
vboxmanage --version – nux May 18 '14 at 18:13
up vote 3 down vote accepted

You can download extensions from :

VirtualBox extension packages have a .vbox-extpack file name extension. To install an extension, simply double-click on the package file and a Network Operations Manager window will appear, guiding you through the required steps.

Reference :Here

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