Mac Bridge Port Error

[FAIB]

After updating to the newest version I lost my network connection on the XP session I made. And I am not more able to go on Settings menu for this session.
What do I do?
(I have set it to mac bridge port because I wanted to create my own IP on this host, this have worked perfectly fine until upgrading the Sun Virtualbox)
My error is:

Result Code:
E_FAIL (0x80004005)
Component:
Console
Interface:
IConsole {6375231a-c17c-464b-92cb-ae9e128d71c3}

I'm trying to create a bridge, but first im trying to do File- Preferences- Network- Add host-only network. and then I click continue Anyway, then I get the error: Failed to create host-only network interface.
this is my second post, still have network issues.. please help