Problems starting Eclipse in Fedora 7. Missing sym class??

[Campbell Ritchie]

In a fit of desperation, I tried a clean installation of Fedora (FC7) this week, instead of an upgrade. Most things worked well, but I am having difficulties with Eclipse. I have tried downloading it from several sources, copying it into different folders, and I got it to work this morning logged on as root. Not what I ought to be doing. Most of the time it gets just beyond the box asking where I want my workspace to be, then says there is an error, look in "/home/Campbell/workspace/.metadata/.log" Opening the log file shows an Exception, like this:-

!SESSION 2007-06-29 13:51:29.764 -----------------------------------------------
eclipse.buildId=M20070212-1330
java.version=1.6.0_01
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Command-line arguments:  -os linux -ws gtk -arch x86
 
!ENTRY org.eclipse.core.resources 2 10035 2007-06-29 13:51:33.275
!MESSAGE A workspace crash was detected. The previous session did not exit normally.
 
!ENTRY org.eclipse.osgi 4 0 2007-06-29 13:51:33.459
!MESSAGE An error occurred while automatically activating bundle org.eclipse.core.resources (133).
!STACK 0
org.osgi.framework.BundleException: Exception in org.eclipse.core.internal.compatibility.PluginActivator.start() of bundle org.eclipse.core.resources.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:1010)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:966)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:256)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:342)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.preFindLocalClass(EclipseLazyStarter.java:88)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:189)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:334)
at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(SingleSourcePackage.java:37)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:383)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:347)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
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:597)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
Caused by: org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element /JavaFlexer/javaflex/sym.class not found.
at org.eclipse.core.internal.dtree.AbstractDataTree.handleNotFound(AbstractDataTree.java:257)
at org.eclipse.core.internal.dtree.DeltaDataTree.getData(DeltaDataTree.java:585)
at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:50)
at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
at org.eclipse.core.internal.dtree.DeltaDataTree.asBackwardDelta(DeltaDataTree.java:88)
at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:816)
at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:792)
at org.eclipse.core.internal.watson.ElementTree.immutable(ElementTree.java:517)
at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:644)
at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1299)
at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:1883)
at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:1653)
at org.eclipse.core.resources.ResourcesPlugin.startup(ResourcesPlugin.java:367)
at org.eclipse.core.internal.compatibility.PluginActivator.start(PluginActivator.java:31)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:991)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:985)
... 28 more
Root exception:
org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element /JavaFlexer/javaflex/sym.class not found.
at org.eclipse.core.internal.dtree.AbstractDataTree.handleNotFound(AbstractDataTree.java:257)
at org.eclipse.core.internal.dtree.DeltaDataTree.getData(DeltaDataTree.java:585)
at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:50)
at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
at org.eclipse.core.internal.dtree.NoDataDeltaNode.asBackwardDelta(NoDataDeltaNode.java:59)
at org.eclipse.core.internal.dtree.DataDeltaNode.asBackwardDelta(DataDeltaNode.java:47)
at org.eclipse.core.internal.dtree.DeltaDataTree.asBackwardDelta(DeltaDataTree.java:88)
at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:816)
at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:815)
at org.eclipse.core.internal.dtree.DeltaDataTree.reroot(DeltaDataTree.java:792)
at org.eclipse.core.internal.watson.ElementTree.immutable(ElementTree.java:517)
at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:644)
at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1299)
at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:1883)
at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:1653)
at org.eclipse.core.resources.ResourcesPlugin.startup(ResourcesPlugin.java:367)
at org.eclipse.core.internal.compatibility.PluginActivator.start(PluginActivator.java:31)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:991)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:985)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:966)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:317)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:256)
at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:342)
at org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter.preFindLocalClass(EclipseLazyStarter.java:88)
at org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLocalClass(ClasspathManager.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.findLocalClass(DefaultClassLoader.java:189)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(BundleLoader.java:334)
at org.eclipse.osgi.framework.internal.core.SingleSourcePackage.loadClass(SingleSourcePackage.java:37)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:383)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(BundleLoader.java:347)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:83)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
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:597)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
 
!ENTRY org.eclipse.osgi 4 0 2007-06-29 13:51:33.465
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: org/eclipse/core/resources/IContainer
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
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:597)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)
 
!ENTRY org.eclipse.osgi 2 0 2007-06-29 13:51:33.638
!MESSAGE The following is a complete list of bundles which are not resolved, see the prior log entry for the root cause if it exists:
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.638
!MESSAGE Bundle update@plugins/org.eclipse.jdt.source_3.2.1.r321_v20060905-R4CM1Znkvre9wC-/ [5] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.638
!MESSAGE Bundle update@plugins/org.eclipse.jdt.doc.isv_3.2.1.r321_v20060907.jar [8] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.638
!MESSAGE Bundle update@plugins/org.eclipse.debug.ui_3.2.1.v20060823.jar [9] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.638
!MESSAGE Bundle update@plugins/org.eclipse.ui.intro_3.2.1.R321_v20060810.jar [17] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.638
!MESSAGE Bundle update@plugins/org.eclipse.update.scheduler_3.2.1.v20092006.jar [20] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/com.ibm.icu.source_3.4.5/ [23] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/org.eclipse.help_3.2.1.R321_v20060920.jar [24] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/org.eclipse.update.core_3.2.1.v20092006.jar [25] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/com.ibm.icu_3.4.5.jar [26] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/org.eclipse.core.expressions_3.2.1.r321_v20060721.jar [31] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/org.eclipse.platform_3.2.0.v20060601/ [35] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/org.eclipse.platform.source.linux.gtk.x86_3.2.1.r321_v20060921-b_XVA-INSQSyMtx/ [36] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/org.eclipse.sdk_3.2.1.r321_v20060705/ [38] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/org.eclipse.jdt.ui_3.2.1.r321_v20060907.jar [39] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/org.eclipse.swt.gtk.linux.x86_3.2.1.v3235.jar [41] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.639
!MESSAGE Bundle update@plugins/org.eclipse.help.base_3.2.1.R321_v20060822.jar [47] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.team.cvs.ui_3.2.1.M20060831.jar [51] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.platform.doc.isv_3.2.1.r321_v2006030.jar [52] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.team.cvs.ssh2_3.2.0.I200606051140.jar [55] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.rcp.source_3.2.1.r321_v20060801-2ekW2BxmcpPUOoq/ [58] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.update.ui_3.2.1.v20092006.jar [60] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.team.core_3.2.1.M20060711.jar [63] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.swt_3.2.1.v3235e.jar [69] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.jdt.debug.ui_3.2.1.r321_v20060918.jar [72] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.ui.workbench_3.2.1.M20060906-0800.jar [73] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.platform.source_3.2.1.r321_v20060921-b_XVA-INSQSyMtx/ [74] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.rcp.source.linux.gtk.x86_3.2.1.r321_v20060801-2ekW2BxmcpPUOoq/ [75] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.jdt.launching_3.2.1.r321_v20060731.jar [76] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.jdt.core_3.2.1.v_677_R32x.jar [79] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.640
!MESSAGE Bundle update@plugins/org.eclipse.help.webapp_3.2.1.R321_v20060803/ [92] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.641
!MESSAGE Bundle update@plugins/org.eclipse.jdt.debug_3.2.1.r321_v20060731/ [93] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.641
!MESSAGE Bundle update@plugins/org.eclipse.ui_3.2.1.M20060913-0800.jar [99] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.641
!MESSAGE Bundle update@plugins/org.eclipse.team.cvs.core_3.2.1.M200608161750.jar [100] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.641
!MESSAGE Bundle update@plugins/org.eclipse.core.resources_3.2.1.R32x_v20060914.jar [103] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.641
!MESSAGE Bundle update@plugins/org.eclipse.ltk.ui.refactoring_3.2.1.r321_v20060726.jar [105] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.641
!MESSAGE Bundle update@plugins/org.eclipse.update.configurator_3.2.1.v20092006.jar [118] was not resolved.
!SUBENTRY 1 org.eclipse.osgi 2 0 2007-06-29 13:51:33.641
!MESSAGE Bundle update@plugins/org.eclipse.osgi_3.2.1.R32x_v20060919.jar [122] was not resolved.

Whenever I try it, I seem to get a similar set of stack traces. I think the core problem is

Root exception:
org.eclipse.core.internal.dtree.ObjectNotFoundException: Tree element /JavaFlexer/javaflex/sym.class not found.

Anybody know anything about this class and where it ought to be and how to sort my exception out?

I have tried writing parsers, so I have come across sym classes before; they appear to carry the information about which token is which from the scanner often called a Flexer, to the Parser, and they are obviously crucial to the IDE.

[Campbell Ritchie]

I tried downloading Eclipse 3.3 this morning, only they call it "Eclipse Europa," and installed it with the usual command:

tar zxvf eclipse-java-europa-gtk.tar.gz

And I got the same sort of error, but it was a different file it failed to find. I recognised it as one I wrote myself. Obviously there is some sort of problem going back from the configuration files to the original workspace.

I deleted the eclipse folder, repeated the tar zxvf etc., and told it to set up a new workspace folder. It is now working

[Campbell Ritchie]

I have found out there is a file in /home/Campbell/eclipse/configuration/.settings called org.eclipse.ui.ide.prefs which has the names of the workspaces in. I simply edited that file to delete the name of a workspace which I suspect doesn't work properly, and Eclipse worked again.

The . before settings means it is a hidden file.

[Amit Muku]

Thanks Campbell, your finding saved my day !!

[Campbell Ritchie]

Welcome to the Ranch; glad to be of help. I was a bit surprised to see one of my old posts reappear like that!