I run oVirt 4.2.1, in 4.1 I added a USB device to a VM and now I wanted to change this device to a different VM.
But I found out, that I'm not able to remove this device nor I'm able to add any device to any VM. The device list is empty.

I found a bug report, what describe this error:

Is there a solution for that?

The USB device is a hardware dongle and it is very impotent for us to change this.

Any workaround is welcome!