百度云盘上下载的alpha版windows的hbuilder用不了，我打开就会报错

!SESSION Mon Mar 20 10:27:48 CST 2017 ------------------------------------------
!ENTRY org.eclipse.equinox.launcher 4 0 2017-03-20 10:27:48.759
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.lang.ClassNotFoundException: org.eclipse.core.runtime.adaptor.EclipseStarter
at java.net.URLClassLoader$1.run(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 java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:652)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
at org.eclipse.equinox.launcher.Main.run(Main.java:1491)