Fwd: Attaching any USB device to any VM causes virtualbox to crash.

[Robert Backhaus]

With the current virtualbox (4.3.16), attaching any USB device causes
virtualbox to crash or hang, sometimes with the following message:

Failed to attach the USB device [DeviceName] to the virtual machine [vm name].
Failed to create a proxy device for the USB device. (Error: VERR_READ_ERROR).

Result Code:
NS_ERROR_FAILURE (0x80004005)
Component:
Console
Interface:
IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}


This error has been reported by pwr2srv at
https://forums.freebsd.org/viewtopic.php?f=5&t=48134&p=269117#p269117

The same thing happens even with a fresh, blank VM.


Downgrading, either by installing the package, or by pulling the old
revision of the ports tree and building that, fixes the problem.