Sometimes when running the C# SDK for HDInsight, you can come across the following error:
The system cannot find the batch label specified – jar
Error: Could not find or load main class c:\apps\dist\hadoop-1.1.0-SNAPSHOT\lib\hadoop-streaming.jar
To get around this, close the command shell that you are currently in and open up a new hadoop shell, and try your command again. It should work immediately.