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java.lang.NullPointerException: 	at com.springsource.sts.grails.ui.internal.importfixes.GrailsProjectVersionFixer$ProjectChangeHandler.askToUpgradeFromSupportedInstalled(GrailsProjectVersionFixer.java:438)	at com.springsource.sts.grails.ui.internal.importfixes.GrailsProjectVersionFixer$ProjectChangeHandler.handleMismatchingVersions(GrailsProjectVersionFixer.java:315)	at com.springsource.sts.grails.ui.internal.importfixes.GrailsProjectVersionFixer$ProjectChangeHandler.fix(GrailsProjectVersionFixer.java:274)	at com.springsource.sts.grails.ui.internal.importfixes.GrailsProjectVersionFixer$ProjectChangeHandler.projectsChanged(GrailsProjectVersionFixer.java:244)	at com.springsource.sts.grails.ui.internal.importfixes.GrailsProjectVersionFixer$ProjectChangeHandler.access$1(GrailsProjectVersionFixer.java:230)	at com.springsource.sts.grails.ui.internal.importfixes.GrailsProjectVersionFixer$1.resourceChanged(GrailsProjectVersionFixer.java:99)	at org.eclipse.core.internal.events.NotificationManager$2.run(NotificationManager.java:291)	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)	at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)	at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)	at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:327)	at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1181)	at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:45)	at com.springsource.sts.grails.commands.test.AbstractCommandTest.importProject(AbstractCommandTest.java:201)	at com.springsource.sts.grails.test.GrailsProjectVersionFixerTest.testImportProjectWithUnknownEclipseGrailsVersion(GrailsProjectVersionFixerTest.java:476)	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 junit.framework.TestCase.runTest(TestCase.java:168)	at junit.framework.TestCase.runBare(TestCase.java:134)	at junit.framework.TestResult$1.protect(TestResult.java:110)	at junit.framework.TestResult.runProtected(TestResult.java:128)	at junit.framework.TestResult.run(TestResult.java:113)	at junit.framework.TestCase.run(TestCase.java:124)	at junit.framework.TestSuite.runTest(TestSuite.java:232)	at junit.framework.TestSuite.run(TestSuite.java:227)	at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)	at org.eclipse.pde.internal.junit.runtime.RemotePluginTestRunner.main(RemotePluginTestRunner.java:62)	at org.eclipse.pde.internal.junit.runtime.UITestApplication$1.run(UITestApplication.java:116)	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:3515)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3164)	at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)	at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)	at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)	at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)	at org.eclipse.pde.internal.junit.runtime.UITestApplication.start(UITestApplication.java:47)	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)	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:369)	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:620)	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)	at org.eclipse.equinox.launcher.Main.run(Main.java:1408)	at org.eclipse.equinox.launcher.Main.main(Main.java:1384)