Hello All -- My apologies is this issue has already been addressed in another thread; I did a search but couldn't find anything.

My problem: I recently ran the 12.04 upgrade via the update manager. All seemed to go fine, and booted up successfully to the updated OS. However, when I went to open my previously installed WinXP in VirtualBox, I get the following pop-up error screen:

Failed to open a session for the virtual machine XP_Pro.

Failed to load VMMR0.r0 (VERR_SUPLIB_WRITE_NON_SYS_GROUP).

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: Console
Interface: IConsole {1968b7d3-e3bf-4ceb-99e0-cb7c913317bb}

This does not bode well, and I have no clue if there is anything to be done or not. I'm hoping one of you knowledgeable people would know a solution. Is there anyone that can help? Thank you!