I'm trying to use MessagePack in a WAR application in Glassfish, but I'm getting this exception (although JavaAssist already is a library of the project): java.lang.NoClassDefFoundError: javassist/ClassPath at org.msgpack.template.builder.BuilderSelectorRegistry.initForJava(BuilderSelectorRegistry.java:58) at org.msgpack.template.builder.BuilderSelectorRegistry.(BuilderSelectorRegistry.java:38) at
