If you ever run into a problem like this during the build, where the build runs fine for your modules but when the assembler starts suddenly the DYNAMO_HOME env variable is empty: [echo] runAssembler path is /opt/ATG/ATG10.2/home/bin/ [echo] [exec] Error: -Djava.security.policy=lib/java.policy -Datg.dynamo.home=. -Datg.dynamo.root=./.. -Datg.dynamo.display=:0 -Djava.protocol.handler.pkgs=atg.net.www.protocol -Djava.naming.factory.url.pkgs=atg.jndi.url -Datg.dynamo.modulepath=./.. -Xms512m -Xmx1024m -XX:MaxPermSize=128m -XX:MaxNewSize=128m -Datg.dynamo.server.home= -Datg.dynamo.modules=DAS -Datg.dynamo.layers= -Datg.dynamo.root=./.. -Datg.cygwin=false atg.applauncher.dynamo.DynamoServerLauncher -environment /tmp/dynamoEnv2907.sh DAS -classPathModules DAS failed [exec] CLASSPATH was ./locallib/:./lib/launcher.jar:/opt/jboss/jboss-5.1.0.GA/common/lib/jsp-api.jar:/opt/jboss/jboss-5.1.0.GA/lib/jboss-javaee.jar:/opt/jboss/jboss-5.1.0.GA/common/lib/servlet-api.jar