An error has occurred.See the log file

An error has occurred.See the log file
SESSION 2014-03-13 10:10:20.090 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.7.0_45
java.vendor=Oracle Corporation
BootLoader constants:OS=win32,ARCH=x86,WS=win32,NL=zh_CN
Command-line arguments:-os win32 -ws win32 -arch x86
ENTRY org.eclipse.osgi 4 0 2014-03-13 10:10:20.531
MESSAGE Application error
STACK 1
java.lang.IllegalStateException:Unable to acquire application service.Ensure that the org.eclipse.core.runtime bundle is resolved and started (see config.ini).
x05at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:74)
x05at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:354)
x05at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:181)
x05at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
x05at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
x05at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
x05at java.lang.reflect.Method.invoke(Method.java:606)
x05at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:636)
x05at org.eclipse.equinox.launcher.Main.basicRun(Main.java:591)
x05at org.eclipse.equinox.launcher.Main.run(Main.java:1450)