Crashing on VM power down

[aikon]

I am using VBoxHeadlessTray to run a small Linux server on my Windows 7 64-bit host. Whenever I shut down the VM using e.g. "sudo shutdown -h now" or using the "Turn off..." option from the VBHT menu, once the VM powers down, VBoxHeadlessTray crashes, throwing a windows error dialog along the lines of "this program has stopped working". After clicking the "Close application" option, I then have to right-click->exit VBHT.

I am running VirtualBox 4.06 and VBoxHeadlessTray 4.0.0.0. I have granted the VM raw disk access to four of my drives, and so am running VBoxHeadlessTray as administrator.