i am using eclipse Luna. I have installed e4 tools
When i tried to create e4 project as File -> New -> Other… -> Eclipse 4 Application Project. Following error occurs:
构建期间发生错误。 错误运行构建器＆＃39;插件清单生成器＆＃39;在项目＆＃39;测试＆＃39;。 java.lang.NullPointerException是什么原因？