title: How to clear the SpringSource Tool Suite cache?
body: <p>I have installed <a href="http://www.springsource.com/developer/sts" rel="nofollow">SpringSource Tool Suite</a> (STS) version 3. I created two Maven projects: a console application and a web Maven application. I tried to open <code>Main.java</code> in Eclipse, but without success. 
  I tried to restart STS, but receive this error:</p>
  
  <pre><code>!SESSION 2012-06-09 09:13:29.626 -----------------------------------------------
  eclipse.buildId=3.0.0.201205010613-M1-e42
  java.version=1.7.0_04
  java.vendor=Oracle Corporation
  BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
  Framework arguments:  -product com.springsource.sts.ide
  Command-line arguments:  -os win32 -ws win32 -arch x86 -product com.springsource.sts.ide
  
  !ENTRY org.eclipse.osgi 4 0 2012-06-09 09:13:30.552
  !MESSAGE FrameworkEvent ERROR
  !STACK 0
  org.osgi.framework.BundleException: Exception in org.eclipse.osgi.framework.internal.core.SystemBundleActivator.start() of bundle org.eclipse.osgi.
      at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
      at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
      at org.eclipse.osgi.framework.internal.core.InternalSystemBundle.resume(InternalSystemBundle.java:225)
      at org.eclipse.osgi.framework.internal.core.Framework.launch(Framework.java:657)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.startup(EclipseStarter.java:274)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      at java.lang.reflect.Method.invoke(Unknown Source)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
  Caused by: java.lang.IllegalStateException: Expected to find an object at table index: 1008
  </code></pre>
  
  <p>I suppose that I need to clear some cache. Is that correct? Where is it? </p>