我装了eclipse3.7+jdk1.6，
新建一个SWT项目，新建一个SWT application
不加任何内容直接运行，正常情况应该是出现一个空的窗口才对吧。结果报错了，网上搜了半天也没找到原因，只好发帖求助了。请大虾指点。
Exception in thread "main" java.lang.ExceptionInInitializerError
at org.eclipse.swt.widgets.Display.<init>(Display.java:204)
at org.eclipse.swt.widgets.Display.<init>(Display.java:480)
at org.eclipse.swt.widgets.Display.getDefault(Display.java:1680)
at org.eclipse.swt.HelloWorld1.main(HelloWorld1.java:13)
Caused by: java.lang.SecurityException: class "org.eclipse.swt.SWT"'s signer information does not match signer information of other classes in the same package
at java.lang.ClassLoader.checkCerts(Unknown Source)
at java.lang.ClassLoader.preDefineClass(Unknown Source)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.swt.widgets.Synchronizer.<clinit>(Synchronizer.java:46)
... 4 more
------解决方案--------------------
换个Package试一试