Variables to consider defining: aspectjrt.path path to release version of runtime test.classpath use jar.classpath or bin.classpath (default is bin if available) Using jar.classpath requires building all modules *with* testing code, as follows: cd build ant clean ant -Dtrim.testing.default=false build-testing-drivers ant -Dtrim.testing.default=false aspectjrt ant -Dtrim.testing.default=false any-module -Dmodule.name=ajbrowser