I just upgraded to 4 - first boot - My virtual DVD was disk D shown=wing parallel tools. Trying to open the CD it crashed. Every time I startup since I get the message Unable to connect CD/DVD-ROM 1 A file or device required for the operation of the CD/DVD-ROM 1 does not exist or is used by another process. The CD icon has a red X. I can connect to the real hardware DVD though. How to fix?