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Unable to install extension pack in Virtualbox, thus no USB access in guest

I had been using VirtualBox for last two months, and do not know much in detail. I somehow installed it in Ubuntu 14.04 LTS.
I installed Winodws7 in the Virtual box.

Now I required to use the USB ports, so was trying to install the extension pack.
While extension packs installation I was getting following error

Code:

failed to load the main module ('/usr/lib/virtualbox/extensionpacks/oracle_vm_virtualbox_extension_pack/linux.amd64/vboxpuelmain.so')
 verr_file_not_found - /usr/lib/virtualbox/extensionpacks/oracle_vm_virtualbox_extension_pack/linux.amd64/vboxpuelmain.so undefined symbol rtlogrelgetdefaultinstanceex
I googled it, and found, it had something to do with root permissions.
So, I checked that /usr/lib/virtualbox was set to root permissions, and thus I was not able to install the extension pack.

Then I did a blunder by doing the following:

Code:

chown -R akki /usr/lib/virtualbox/
Now, when I open the virtualbox it shows me the following error.

Code:

Effective UID is not root (euid=1001 egid=1001 uid=1001 gid=1001) (rc=-10)
Please try reinstalling VirtualBox.

where: SUPR3HardenedMain
what:  2
VERR_PERMISSION_DENIED (-10) - Permission denied.
I was looking for a way to solve the problem. I came across a solution and did the following,

Code:

chmod 4711 /usr/lib/virtualbox/Virtualbox
It worked. Now I am able to open VirtualBox with Windows7 in it.
But, still I am not able to install the extension pack. I need to coect my ATLYS board with the Windows7 for my project.
PLEASE HELP.

برچسب: نویسنده: استخدام کار تاريخ: سه شنبه 10 فروردين 1395 ساعت: 15:32

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