When I click debug in visual studio on an Azure project I keep getting the same following error every time:

In the background, the other parts do run and the emulator runs but none of the logging functions work. I am running a pretty clean Windows 8 install (downloaded from DreamSpark) with a clean Visual Studio 2012 Ultimate RC installed.
How can I fix whatever is going wrong?
I had the same problem and discovered that this seem to work
If I reboot and then start the azure emulator from the azure command prompt. Works fine.
If I then shut down and exit the taskbar icon and restart from the command prompt, I get the error again.
Checking the running processes, it seems that dfmonitor.exe does not terminate and continues running.
If I terminate dfmonitor.exe and then restart the emulator from the command prompt, it starts up fine without the error.