我已经安装了SpringSource Tool Suite（STS）版本3。我创建了两个Maven项目：一个控制台应用程序和一个Web Maven应用程序。我试图在Eclipse中打开Main.java，但没有成功。我试图重新启动STS，但收到此错误：

!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

我想我需要清除一些缓存。对吗？它在哪里？