title: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory
body: <p>I am getting the error as mentioned below, while running the feed utility. I am trying to load an image "<strong>logo.png</strong>". The <code>slf4j</code> jar file is also available in the runtime classpath. But still I am getting this error. </p>
  
  <pre><code>Oct 16, 2012 7:34:11 PM com.ibm.commerce.foundation.dataload.FeedRetriever  invokeDataLoad
  SEVERE: An error occurred while performing data load.
  Throwable occurred: com.ibm.commerce.foundation.dataload.exception.DataLoadException: 
  An error occurred while executing the data load. 
  
  java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory
  
      at com.ibm.commerce.foundation.dataload.DataLoaderMain.execute(DataLoaderMain.java:664)
      at com.ibm.commerce.content.commands.DataLoadInvoker.execute(DataLoadInvoker.java:101)
      at com.ibm.commerce.foundation.dataload.FeedRetriever.invokeDataLoad(FeedRetriever.java:244)
      at com.ibm.commerce.foundation.dataload.FeedRetriever.execute(FeedRetriever.java:172)
      at com.ibm.commerce.foundation.dataload.FeedRetriever.main(FeedRetriever.java:321)
  Caused by: java.lang.RuntimeException: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory
      at com.ibm.commerce.foundation.dataload.DataLoaderMain.execute(DataLoaderMain.java:488)
      ... 4 more
  Caused by: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory
      at org.apache.wink.client.ClientConfig.&lt;clinit&gt;(ClientConfig.java:52)
      at java.lang.J9VMInternals.initializeImpl(Native Method)
      at java.lang.J9VMInternals.initialize(J9VMInternals.java:200)
      at java.lang.J9VMInternals.initialize(J9VMInternals.java:167)
      at com.ibm.commerce.foundation.dataload.feedreader.AtomReader.getFeed(AtomReader.java:104)
      at com.ibm.commerce.foundation.dataload.feedreader.AtomReader.getEntries(AtomReader.java:147)
      at com.ibm.commerce.foundation.dataload.feedreader.AtomReader.getEntries(AtomReader.java:1)
      at com.ibm.commerce.foundation.dataload.feedreader.BaseFeedReader.init(BaseFeedReader.java:252)
      at com.ibm.commerce.foundation.dataload.AbstractBusinessObjectLoader.initializeDataReaders(AbstractBusinessObjectLoader.java:1344)
      at com.ibm.commerce.foundation.dataload.AbstractBusinessObjectLoader.init(AbstractBusinessObjectLoader.java:369)
      at com.ibm.commerce.foundation.dataload.BusinessObjectLoader.init(BusinessObjectLoader.java:65)
      at com.ibm.commerce.foundation.dataload.DataLoaderMain.execute(DataLoaderMain.java:431)
      ... 4 more
  Caused by: java.lang.ClassNotFoundException: org.slf4j.LoggerFactory
      at java.lang.ClassNotFoundException.&lt;init&gt;(ClassNotFoundException.java:76)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:396)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:660)
      at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:358)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:626)
      ... 16 more
  Oct 16, 2012 7:34:11 PM com.ibm.commerce.foundation.dataload.FeedRetriever main
  SEVERE: An error occurred while performing data load.
  Throwable occurred: com.ibm.commerce.foundation.dataload.exception.DataLoadException: An error has occurred.  If this problem persists, contact product support.
      at com.ibm.commerce.foundation.dataload.FeedRetriever.invokeDataLoad(FeedRetriever.java:247)
      at com.ibm.commerce.foundation.dataload.FeedRetriever.execute(FeedRetriever.java:172)
      at com.ibm.commerce.foundation.dataload.FeedRetriever.main(FeedRetriever.java:321)
  </code></pre>