Sorry about that, I wasn't sure what "more information" exactly was when I wrote the original message.
I did have one other emulation installed at the time. I was using Daemon, but it wasn't in the system tray at the time. Daemon's fake drive was visible through My Computer, but I'm sure it wasn't running in the system tray.
After the crash, I installed Alcohol, so now I have that virtual drive running as well. Should I go and uninstall Daemon and Alcohol and then try CCD to see if it works?