Dear Markus, Thanks! It looks like CodeNarc switched to using Junit 4.x somewhere between 0.17 and 0.23, but the CodeNarc's debian/maven.rules didn't get updated, so the CodeNarc pom is generated incorrectly. Rebuilding the CodeNarc package with an updated debian/maven.rules and installing it locally fixes the issue I was having. Thanks again. Christopher