title: NoSuchMethodError: org.slf4j.helpers.MessageFormatter.format
body: <p>I'm getting this error when running my application:</p>
  
  <pre><code>[ERROR] Apr 12, 2013 10:18:56 AM com.google.appengine.tools.development.ApiProxyLocalImpl log
  [ERROR] INFO: javax.servlet.ServletContext log: Initializing Shiro environment
  [ERROR] 1601 [main] INFO org.apache.shiro.web.env.EnvironmentLoader - Starting Shiro environment initialization.
  [ERROR] 1931 [main] INFO org.apache.shiro.config.IniSecurityManagerFactory - Realms have been explicitly set on the SecurityManager instance - auto-setting of realms will not occur.
  [ERROR] 1984 [main] ERROR org.apache.shiro.web.env.EnvironmentLoader - Shiro environment initialization failed
  [ERROR] java.lang.NoSuchMethodError: org.slf4j.helpers.MessageFormatter.format(Ljava/lang/String;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/String;
  [ERROR]     at org.slf4j.impl.SimpleLogger.formatAndLog(SimpleLogger.java:222)
  [ERROR]     at org.slf4j.impl.SimpleLogger.info(SimpleLogger.java:258)
  [ERROR]     at org.apache.shiro.web.env.EnvironmentLoader.initEnvironment(EnvironmentLoader.java:146)
  [ERROR]     at org.apache.shiro.web.env.EnvironmentLoaderListener.contextInitialized(EnvironmentLoaderListener.java:58)
  [ERROR]     at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:548)
  [ERROR]     at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
  [ERROR]     at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
  [ERROR]     at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
  [ERROR]     at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
  [ERROR]     at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
  [ERROR]     at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
  [ERROR]     at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
  [ERROR]     at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
  [ERROR]     at org.mortbay.jetty.Server.doStart(Server.java:224)
  [ERROR]     at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
  [ERROR]     at com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:228)
  [ERROR]     at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:255)
  [ERROR]     at com.google.appengine.tools.development.AbstractServer.startup(AbstractServer.java:79)
  [ERROR]     at com.google.appengine.tools.development.DevAppServerImpl$Servers.startup(DevAppServerImpl.java:451)
  [ERROR]     at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:198)
  [ERROR]     at com.google.appengine.tools.development.gwt.AppEngineLauncher.start(AppEngineLauncher.java:97)
  [ERROR]     at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
  [ERROR]     at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
  [ERROR]     at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
  [ERROR]     at com.google.gwt.dev.DevMode.main(DevMode.java:311)
  [ERROR] Apr 12, 2013 10:18:56 AM com.google.apphosting.utils.jetty.JettyLogger warn
  </code></pre>
  
  <p>This is the part of my pom.xml configuration which I think relates to this:</p>
  
  <pre><code>&lt;properties&gt;
          &lt;!-- other properties omitted --&gt;
          &lt;slf4jVersion&gt;1.5.11&lt;/slf4jVersion&gt;
  &lt;/properties&gt;
      &lt;dependency&gt;
          &lt;groupId&gt;org.slf4j&lt;/groupId&gt;
          &lt;artifactId&gt;slf4j-api&lt;/artifactId&gt;
          &lt;version&gt;${slf4jVersion}&lt;/version&gt;
      &lt;/dependency&gt;
      &lt;dependency&gt;
          &lt;!-- any library that uses commons-logging will be directed to slf4j --&gt;
          &lt;groupId&gt;org.slf4j&lt;/groupId&gt;
          &lt;artifactId&gt;jcl-over-slf4j&lt;/artifactId&gt;
          &lt;version&gt;${slf4jVersion}&lt;/version&gt;
          &lt;/dependency&gt;
      &lt;dependency&gt;
          &lt;!-- any library that uses slf4j will be directed to java.util.logging --&gt;
          &lt;groupId&gt;org.slf4j&lt;/groupId&gt;
          &lt;artifactId&gt;slf4j-jdk14&lt;/artifactId&gt;
          &lt;version&gt;${slf4jVersion}&lt;/version&gt;
      &lt;/dependency&gt;
      &lt;dependency&gt;
          &lt;groupId&gt;org.slf4j&lt;/groupId&gt;
              &lt;artifactId&gt;slf4j-simple&lt;/artifactId&gt;
              &lt;version&gt;${slf4jVersion}&lt;/version&gt;
              &lt;scope&gt;test&lt;/scope&gt;
      &lt;/dependency&gt;
      &lt;dependency&gt;
          &lt;groupId&gt;org.slf4j&lt;/groupId&gt;
          &lt;artifactId&gt;slf4j-log4j12&lt;/artifactId&gt;
          &lt;version&gt;${slf4jVersion}&lt;/version&gt;
      &lt;/dependency&gt;
  </code></pre>
  
  <p>I'm pretty sure I have the SLF4j version all setup into one version. What could be wrong in my configuration?</p>