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I get a dialog box telling me to look in the log, where I find the following exception: It could be reported in a nicer way. !SESSION ---------------------------------------------------------------------- !ENTRY org.eclipse.core.launcher 4 0 יונ 09, 2002 01:29:34.939 !MESSAGE Exception launching the Eclipse Platform: !STACK java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.basicRun(Main.java:244) at org.eclipse.core.launcher.Main.run(Main.java:693) at org.eclipse.core.launcher.Main.main(Main.java:526) Caused by: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.internal.boot.InternalBootLoader.startup(InternalBootLoader.java:873) at org.eclipse.core.internal.boot.InternalBootLoader.run(InternalBootLoader.java:732) at org.eclipse.core.boot.BootLoader.run(BootLoader.java:462) ... 7 more Caused by: org.eclipse.core.runtime.CoreException: The platform metadata area is already in use by another platform instance, or there was a failure in deleting the old lock file. If no other platform instances are running, delete the lock file (C:\eclipse\workspace\.metadata\.lock) and try starting the platform again. at org.eclipse.core.internal.runtime.InternalPlatform.createLockFile(InternalPlatform.java:195) at org.eclipse.core.internal.runtime.InternalPlatform.loaderStartup(InternalPlatform.java:546) ... 14 more
I forgot to mention - build F2.
*** This bug has been marked as a duplicate of 21294 ***