Hi, I'm using the drools-solver.M5 build through Maven and have gotten the following error while running my project: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. I've checked my dependency graph, and drools-solver references the sl4j-api, but no implementation. I checked the mvnrepository, and there are several other slf4j related projects. What is the preferred binding for JDK1.6? best wishes, Andrew --------------------------------- Andrew Waterman San Cristóbal de las Casas, Chiapas, Mexico +52 1 967 107 5902 +1 510 342 5693