Right for ExtensionPack installation

[Binome]

Hi,
I'm using VB as a simple user. I have access to the administrator user. When I start the new 4.2.12 VB with my user account, it ask for a new ExtensionPack but when I try to install it, it tells me I have not the administrator rights to do that. And when I run VB with the administrator account, I don't see my VMs and it doesn't ask for this ExtensionPack.
Someone knows what I should do?

[noteirak]

Install the expension pack as administrator, then go back to your regular user and run your VMs.

[Binome]

OK, but it doesn't ask for it when I run VB as administrator. Is there a way to install it?

[noteirak]

In the Virtualbox Manager, go into the File menu, select Preferences.
In the newly opened dialog, navigate to Extensions and click on the icon with orange triangle and select the extpack file.

[Binome]

Thank you.