SMS Collection Commander Reviews

I also downloaded and installed this tool but whenever i put the collecton ID,SMS Server and Site Code, It says " The client was unable to establish a connection because of an error during connection initialization process before login. Possible causes include the following: the client tried to connect to an unsupported version of SQL Server; the server was too busy to accept new connections; or there was a resource limitation (insufficient memory or maximum allowed connections) on the server" Am i missing anyhting?? Please suggest --Thanks