Unable to start VB, authentication error

[alcarrolikis]

Hello everyone!

I've got some strange problem when trying to run VB:

When I 'call' VirtualBox through the prompt, I see this message:

Qt WARNING: Qt: Session management error: Authentication Rejected, reason : None of the authentication protocols specified are supported and host-based authentication failed

Someone here can help me?
I'll see why it's happening and if I discover, I post here again.
For now, thanks for all help!

[Sasquatch]

Can you give us some more information, like if you're running Xserver (graphical interface), which groups you're a member of and if other Qt applications give the same problem? Have you tried looking up that error through Google (or a different search engine)?