With ModeShape 2.5.0.Beta1, the ModeShape jar no longer contains an implementation of LoggerFactoryBinder. This change in the MS jar revealed the MS Tools LoggerFactoryBinder implementation (which directs logging to the Eclipse logger) was not being found. This is because the MS Tools implementation was not in the correct package. SLF4J requires instances of LoggerFactoryBinder be in the "org.slf4j.impl" package. Need to repackage the MS Tools' impl.