You need to install the Microsoft Visual C++ 2010 Redistributable Package. You can find it at:
x86 http://www.microsoft.com/download/en/details.aspx?id=5555 Latest Enhancement
I added WspCommand to the event system. The main reason is the difficulty to collect real-time system information from servers. As an example, with the Wsp command functionality, it is now feasible to send a command to 8,000+ servers to get file version information of a specific file and get all responses back and process them within a couple of seconds. When we see performance issues in the eco-system, we can now collect real-time forensics from many or all servers to quickly find the state on the servers.
Creating commands is extensible. You would use the new CommandRequest and CommandResponse classes. To see an example of how to use the classes, you can look at the WspCommand sample application.2.1 Enhancements
Many enhancements and bug fixes have been made to v2.1. In particular, it scales better and works across the WAN better. You now manage the config file for all machines at the origin server which is the top-most node in the hierarchy. In MSN, each data center has one or more parent routers which connect to the origin router. The client servers connect to the same name regardless of data center and the DNS resolves the name to a router in their same data center.
Logging now serializes events to JSON format.
To improve WAN communication, you can now specify how many socket connections a server has to its parent.
The whitepaper below is a out of date but close enough. The overview of the system is still mostly accurate.
I will add a deployment document in the near future to explain how to deploy and what arguments can be passed to the msi. Essentially, you set up your origin router and then all the other deployments you do will point to the origin router to get their config file. If someone really needs it sooner, let me know.