Error marker details window not showing

The details window does not show up when I activate an error marker in a source editor.

This is for Infinistest 5.1.73 and Eclipse 3.5 GTK, Linux x86_64.

Interestingly (or rather, annoyingly), it works perfectly on Mac OS X 10.6, Eclipse Cocoa.

Details from the Eclipse Error log are bellow:

eclipse.buildId=M20090917-0800
java.version=1.6.0_17
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_DK
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.java.product


Error
Wed Dec 16 15:41:07 CET 2009
Unhandled event loop exception

org.apache.commons.lang.SerializationException: java.io.StreamCorruptedException: invalid stream header: EFBFBDEF
at org.apache.commons.lang.SerializationUtils.deserialize(SerializationUtils.java:167)
at org.apache.commons.lang.SerializationUtils.deserialize(SerializationUtils.java:192)
at org.infinitest.eclipse.util.PickleJar.unpickle(PickleJar.java:16)
at org.infinitest.eclipse.resolution.ErrorViewerResolution.run(ErrorViewerResolution.java:49)
at org.eclipse.jdt.internal.ui.text.correction.proposals.MarkerResolutionProposal.apply(MarkerResolutionProposal.java:53)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertProposal(CompletionProposalPopup.java:931)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.insertSelectedProposalWithMask(CompletionProposalPopup.java:877)
at org.eclipse.jface.text.contentassist.CompletionProposalPopup.verifyKey(CompletionProposalPopup.java:1304)
at org.eclipse.jface.text.contentassist.ContentAssistant$InternalListener.verifyKey(ContentAssistant.java:806)
at org.eclipse.jface.text.TextViewer$VerifyKeyListenersManager.verifyKey(TextViewer.java:489)
at org.eclipse.swt.custom.StyledTextListener.handleEvent(StyledTextListener.java:62)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1176)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1200)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1185)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1025)
at org.eclipse.swt.custom.StyledText.handleKeyDown(StyledText.java:5837)
at org.eclipse.swt.custom.StyledText$7.handleEvent(StyledText.java:5541)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1176)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1200)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1185)
at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1212)
at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:706)
at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:2837)
at org.eclipse.swt.widgets.Composite.gtk_key_press_event(Composite.java:703)
at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1570)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:4587)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:4191)
at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native Method)
at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:7588)
at org.eclipse.swt.widgets.Display.eventProc(Display.java:1185)
at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Native Method)
at org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS.java:1860)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3110)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
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.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
Caused by: java.io.StreamCorruptedException: invalid stream header: EFBFBDEF
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:783)
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:280)
at org.apache.commons.lang.SerializationUtils.deserialize(SerializationUtils.java:161)
... 55 more