Deploying rest server in Tomcat 6.0.26 throws the exception below. It seems like that it can't find slf4j-api jar. Michael, did you try the war with any particular tomcat versions? I managed to get around the issue by both removing the exclusion in the RESTEasy depends and adding slf4j-api and slf4j-simple dependencies. java.lang.NoClassDefFoundError: org/slf4j/LoggerFactory at org.jboss.resteasy.plugins.server.servlet.ConfigurationBootstrap.<clinit>(ConfigurationBootstrap.java:27) at org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap.contextInitialized(ResteasyBootstrap.java:26) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3972) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4467) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546) at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:905) at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:740) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:500) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053) at org.apache.catalina.core.StandardHost.start(StandardHost.java:785) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443) at org.apache.catalina.core.StandardService.start(StandardService.java:519) at org.apache.catalina.core.StandardServer.start(StandardServer.java:710) at org.apache.catalina.startup.Catalina.start(Catalina.java:581) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1361) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398) ... 26 more As a side note, deploying the original war I tried in a recent AS trunk fails with: 12:39:58,448 ERROR [[/infinispan-server-rest]] Exception starting filter Resteasy: java.lang.ClassCastException: org.jboss.resteasy.spi.ResteasyProviderFactory cannot be cast to org.jboss.resteasy.spi.ResteasyProviderFactory at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.init(ServletContainerDispatcher.java:55) [:] at org.jboss.resteasy.plugins.server.servlet.FilterDispatcher.init(FilterDispatcher.java:39) [:] at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:462) [:] at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:3286) [:] at org.apache.catalina.core.StandardContext.start(StandardContext.java:3887) [:] AS ships with a different version of RESTEasy library which would explain this issue (latest AS ships 2.0-beta-2 whereas the war includes 1.2.1.GA). However, AFAIR in the past WEB-INF/classes/lib was deployed under a different classloader and hence this shouldn't be a problem. I'll create a couple of JIRAs for these. Cheers, -- Galder Zamarreño Sr. Software Engineer Infinispan, JBoss Cache _______________________________________________ infinispan-dev mailing list infinispan-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/infinispan-dev