Eclipse fails to start, automatically shuts down after half start

Today I do not know why, start Eclipse, start half automatically shut down, start failure. The specific picture is as follows:

1. Start the interface

But in half, it disappears automatically. The day after tomorrow prompts the following questions:

Java.lang.NullPointerException
At Org.eclipse.core.internal.runtime.InternalPlatform.getLog (internalplatform.java:354)
At Org.eclipse.core.runtime.Plugin.getLog (plugin.java:291)
At Org.eclipse.ui.internal.WorkbenchPlugin.log (workbenchplugin.java:830)
At Org.eclipse.ui.statushandlers.StatusManager.logError (statusmanager.java:285)
At Org.eclipse.ui.statushandlers.StatusManager.handle (statusmanager.java:200)
At Org.eclipse.ui.statushandlers.StatusManager.handle (statusmanager.java:231)
At Org.eclipse.ui.statushandlers.statusmanager$statusmanagerloglistener.logging (StatusManager.java:305)
At Org.eclipse.core.internal.runtime.RuntimeLog.logToListeners (runtimelog.java:160)
At Org.eclipse.core.internal.runtime.PlatformLogWriter.logged (platformlogwriter.java:100)
At Org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.safeLogged ( EXTENDEDLOGREADERSERVICEFACTORY.JAVA:86)
At Org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.logPrivileged ( extendedlogreaderservicefactory.java:205)
At Org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.log (Extendedlogreaderservicefactory.java : 178)
At Org.eclipse.equinox.log.internal.ExtendedLogServiceFactory.log (extendedlogservicefactory.java:65)
At Org.eclipse.equinox.log.internal.ExtendedLogServiceImpl.log (extendedlogserviceimpl.java:87)

...........................................................

Job found still running after platform shutdown. Jobs should be canceled by the plugin that scheduled them during shutdown:org.eclipse.ui.internal.workbench$55

How to solve the problem.

Look at the problem is close at loading Workbench place. That's the problem here.

The first thing I do is change the name of the workspace folder,

, and then start the startup successfully, but all the projects disappear, equal to the previous configuration is gone.

2, after I used another method, is to copy the contents of the meta-workspace directly into the new workspace, but to keep the saved files, and then start prompting the following content