Improvingworks Infinitest

I accidentally set "Projects Tested Concurrently" to 16 and after restarting Eclipse the workbench layout couldn't be restored.

It seems to me that an Eclipse plug-in shouldn't crash like that, losing the entire workbench configuration.

java.lang.IllegalArgumentException: Settings core count to 16 max is 8
at org.infinitest.MultiCoreConcurrencyController.setCoreCount(MultiCoreConcurrencyController.java:39)
at org.infinitest.eclipse.workspace.CoreFactory.setConcurrentCoreCount(CoreFactory.java:39)
at org.infinitest.eclipse.InfinitestPlugin.getBean(InfinitestPlugin.java:119)
at org.infinitest.eclipse.InfinitestPlugin.getPluginController(InfinitestPlugin.java:108)
at org.infinitest.eclipse.trim.StatusBar.getPluginController(StatusBar.java:121)
at org.infinitest.eclipse.trim.StatusBar.init(StatusBar.java:29)
at org.eclipse.ui.internal.menus.TrimBarManager2$STrimBuilder.renderTrim(TrimBarManager2.java:442)
at org.eclipse.ui.internal.menus.TrimBarManager2$STrimBuilder.processAdditions(TrimBarManager2.java:378)
at org.eclipse.ui.internal.menus.TrimBarManager2$STrimBuilder.build(TrimBarManager2.java:330)
at org.eclipse.ui.internal.menus.TrimBarManager2.update(TrimBarManager2.java:109)
at org.eclipse.ui.internal.WorkbenchWindow.updateLayoutDataForContents(WorkbenchWindow.java:3783)
at org.eclipse.ui.internal.WorkbenchWindow.setLayoutDataForContents(WorkbenchWindow.java:3796)
at org.eclipse.ui.internal.WorkbenchWindow.createDefaultContents(WorkbenchWindow.java:1114)
at org.eclipse.ui.internal.WorkbenchWindowConfigurer.createDefaultContents(WorkbenchWindowConfigurer.java:625)
at org.eclipse.ui.application.WorkbenchWindowAdvisor.createWindowContents(WorkbenchWindowAdvisor.java:268)
at org.eclipse.ui.internal.WorkbenchWindow.createContents(WorkbenchWindow.java:1000)
at org.eclipse.jface.window.Window.create(Window.java:431)
at org.eclipse.ui.internal.Workbench$60.runWithException(Workbench.java:3363)
at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3885)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3506)
at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvisor.java:803)
at org.eclipse.ui.internal.Workbench$28.runWithException(Workbench.java:1384)
at org.eclipse.ui.internal.StartupThreading$StartupRunnable.run(StartupThreading.java:31)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3885)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3506)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2316)
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)