sbt assembly is giving error
<blockquote>
  <p>C:\scala\spark-1.6.1-bin-hadoop2.6\spark-1.6.1-bin-hadoop2.6>sbt assembly</p>
  
  <p>Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256m; su
  port was removed in 8.0</p>
  
  <p>[info] Set current project to spark-1-6-1-bin-hadoop2-6 (in build file:/C:/scal
  /spark-1.6.1-bin-hadoop2.6/spark-1.6.1-bin-hadoop2.6/)</p>
  
  <p>[error] Not a valid command: assembly</p>
  
  <p>[error] Not a valid project ID: assembly</p>
  
  <p>[error] Expected ':' (if selecting a configuration)</p>
  
  <p>[error] Not a valid key: assembly</p>
  
  <p>[error] assembly</p>
  
  <p>[error]         ^</p>
</blockquote>

<p>Tried everything given on web,still unable to sort out this issue,any help/pointers please ...</p>

<p><a href="https://stackoverflow.com/questions/21245669/sbt-sbt-assembly-errors-not-a-valid-command-assembly-for-apache-spark-pro">&quot;./sbt/sbt assembly&quot; errors &quot;Not a valid command: assembly&quot; for Apache Spark project</a></p>

<p>above solution is also not working...</p>