virtualbox.org

I just upgraded to VB 3.1.2 r56127, and now VB won't start my windos session.

I click the "start" button, I get a quick flash of the "starting virtual machine" popup, the windos window starts as normal, but hangs with the black screen forever. Nothing happens, and I have let it sit all night. The same in the morning.

Any ideas how to fix this, or wait until it's fixed?

I had to rename the ~/Library/VirtualBox directory to something else.

I then reinstalled VirtualBox, and copied the HardDisks contents into the new directory.

Everything is back to normal.

No idea what got corrupted, but this fixed it.