title: Error while trying to deploy a Spring project
body: <p>I got this error when i tried to deploy the spring project in Spring-Tool-Suite 2.9.1.</p>
  
  <pre><code>7 Apr, 2012 5:09:45 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
  WARNING: Problem with directory [D:\IDE\springsource\sts-2.9.1.RELEASE\lib], exists: [false], isDirectory: [false], canRead: [false]
  7 Apr, 2012 5:09:45 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
  WARNING: Problem with directory [D:\IDE\springsource\sts-2.9.1.RELEASE\lib], exists: [false], isDirectory: [false], canRead: [false]
  7 Apr, 2012 5:09:45 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
  WARNING: Problem with directory [D:\IDE\springsource\sts-2.9.1.RELEASE\lib], exists: [false], isDirectory: [false], canRead: [false]
  7 Apr, 2012 5:09:45 PM org.apache.catalina.startup.ClassLoaderFactory validateFile
  WARNING: Problem with directory [D:\IDE\springsource\sts-2.9.1.RELEASE\lib], exists: [false], isDirectory: [false], canRead: [false]
  java.lang.ClassNotFoundException: org.apache.catalina.startup.Catalina
      at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
      at org.apache.catalina.startup.Bootstrap.init(Bootstrap.java:236)
      at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:425)
  </code></pre>
  
  <p>Can someone tell me what the cause of this is?How can i fix this error?</p>