Hello, I have a built Zeppelin from source with Yarn support and everything seems to be working just fine in Scala, but when I switch to the pyspark interpreter, I get an "pyspark 1.4.1 is not supported" error. Also I installed py4j and added spark.home explicitly in the interpreter settings UI. This is the command I used for building: mvn clean package -Pspark-1.4 -Dspark.version=1.4.1 -Dhadoop.version=2.6.0 -Phadoop-2.6 -Pyarn -DskipTests Any specific steps to get pyspark 1.4.1 working in Zeppelin? Thanks in advance!