I downgraded my Rest Easy from 3.0.4.Final to 2.3.6.Final (which I was using with an older version of TomEE) and the Instance Manager isn't null now.
It has a type of org.apache.tomee.catalina.JavaeeInstanceManager now and I got past that error. -- Sent from: http://tomee-openejb.979440.n4.nabble.com/TomEE-Users-f979441.html
