System.ComponentModel.Win32... The specified service has been marked for deletion. This is the first time I have ever seen this error and it may well have been complete luck that I haven't as there seems to be a pretty solid reason why it occurs. It popped when I uninstalled a service using InstallUtil.exe, then tried to install again using the same utility. Because I had the Windows Services window open (apparently it can also happen when you run uninstall without stopping the service as...