The Eclipse executable launcher was unable to locate itscompanion launcher jar.该怎么解决

The Eclipse executable launcher was unable to locate itscompanion launcher jar.
JDK配置成功了。。为什么运行的时候出现错误呢？？
------解决方案--------------------
方法一直接重新解压eclipse压缩包，然后一切环境都重新配置，恢复到原始状态

方法二：步骤

1、去到安装目录下，如（C:\Program Files\IBM\TeamConcert)
2、拷贝eclipse.ini
3、编辑 eclipse.ini 然后移除以下两行:
   -startup
   plugins\org.eclipse.equinox.launcher_1.0.100.v20080509-1800.jar
4、重新启动eclipse