HI all I'm trying to install the Errai addon in Eclipse - but could not find any documentation on how to do this. I guessed that I am to use the coordinate line, which I think is org.jboss.errai.forge:errai-forge-addon However, when I tried to use this I get the following errors: java.lang.IllegalStateException: zip file closed   at java.util.zip.ZipFile.ensureOpen(ZipFile.java:634)   at java.util.zip.ZipFile.getEntry(ZipFile.java:305)   at java.util.jar.JarFile.getEntry(JarFile.java:227)   at java.util.jar.JarFile.getJarEntry(JarFile.java:210)   at org.jboss.modules.JarFileResourceLoader.getJarEntry(JarFileResourceLoader.java:165)   at org.jboss.modules.JarFileResourceLoader.getResource(JarFileResourceLoader.java:197)   at org.jboss.modules.ModuleClassLoader.loadResourceLocal(ModuleClassLoader.java:335)   at org.jboss.modules.ModuleClassLoader$1.loadResourceLocal(ModuleClassLoader.java:87)   at org.jboss.modules.Module.getResourceAsStream(Module.java:612)   at org.jboss.modules.ModuleClassLoader.findResourceAsStream(ModuleClassLoader.java:528)   at org.jboss.modules.ConcurrentClassLoader.getResourceAsStream(ConcurrentClassLoader.java:346)   at java.lang.Class.getResourceAsStream(Class.java:2103)   at org.apache.maven.model.superpom.DefaultSuperPomProvider.getSuperModel(DefaultSuperPomProvider.java:62)   at org.apache.maven.model.building.DefaultModelBuilder.getSuperModel(DefaultModelBuilder.java:978)   at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:262)   at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:375)   at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:231)   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:212)   at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:342)   at org.jboss.forge.furnace.manager.maven.addon.MavenAddonDependencyResolver.resolveResources(MavenAddonDependencyResolver.java:108)   at org.jboss.forge.furnace.manager.maven.addon.LazyAddonInfo.resolveResources(LazyAddonInfo.java:88)   at org.jboss.forge.furnace.manager.maven.addon.LazyAddonInfo.getResources(LazyAddonInfo.java:39)   at org.jboss.forge.furnace.manager.impl.request.DeployRequestImpl.deploy(DeployRequestImpl.java:59)   at org.jboss.forge.furnace.manager.impl.request.DeployRequestImpl$1.call(DeployRequestImpl.java:49)   at org.jboss.forge.furnace.impl.LockManagerImpl.performLocked(LockManagerImpl.java:48)   at org.jboss.forge.furnace.manager.impl.request.DeployRequestImpl.execute(DeployRequestImpl.java:44)   at org.jboss.forge.furnace.manager.impl.request.AbstractAddonActionRequest.perform(AbstractAddonActionRequest.java:57)   at org.jboss.forge.furnace.manager.impl.request.InstallRequestImpl.perform(InstallRequestImpl.java:39)   at org.jboss.forge.addon.manager.impl.ui.AddonInstallCommand.execute(AddonInstallCommand.java:115)   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   at java.lang.reflect.Method.invoke(Method.java:606)   at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor$1.call(ClassLoaderInterceptor.java:87)   at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:42)   at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor.invoke(ClassLoaderInterceptor.java:103)   at org.jboss.forge.addon.manager.impl.ui.AddonInstallCommand_$$_javassist_3f34e15c-5d8c-4ccf-8587-3edd57168665.execute(AddonInstallCommand_$$_javassist_3f34e15c-5d8c-4ccf-8587-3edd57168665.java)   at org.jboss.forge.addon.ui.impl.controller.SingleCommandControllerImpl.execute(SingleCommandControllerImpl.java:90)   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   at java.lang.reflect.Method.invoke(Method.java:606)   at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback$2.call(ClassLoaderAdapterCallback.java:123)   at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:42)   at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback.invoke(ClassLoaderAdapterCallback.java:96)   at org.jboss.forge.addon.ui.controller.CommandController_$$_javassist_068e38e3-7cc9-43b8-a644-7ac41f32decc.execute(CommandController_$$_javassist_068e38e3-7cc9-43b8-a644-7ac41f32decc.java)   at org.jboss.tools.forge.ui.internal.ext.wizards.ForgeWizard$1.run(ForgeWizard.java:113)   at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122) And eclipse.buildId=4.4.1.M20140925-0400 java.version=1.7.0_72 java.vendor=Oracle Corporation BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US Framework arguments:  -product org.eclipse.epp.package.modeling.product Command-line arguments:  -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.modeling.product Unhandled event loop exception java.lang.RuntimeException: Failed to look up versions for [org.jboss.errai.forge:errai-forge-addon ]   at org.jboss.forge.furnace.manager.maven.addon.MavenAddonDependencyResolver.getVersions(MavenAddonDependencyResolver.java:279)   at org.jboss.forge.furnace.manager.maven.addon.MavenAddonDependencyResolver.resolveVersions(MavenAddonDependencyResolver.java:151)   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   at java.lang.reflect.Method.invoke(Method.java:606)   at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor$1.call(ClassLoaderInterceptor.java:87)   at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:42)   at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor.invoke(ClassLoaderInterceptor.java:103)   at org.jboss.forge.furnace.manager.maven.addon.MavenAddonDependencyResolver_$$_javassist_7503c939-9c2f-435d-8014-694898fef4e6.resolveVersions(MavenAddonDependencyResolver_$$_javassist_7503c939-9c2f-435d-8014-694898fef4e6.java)   at org.jboss.forge.addon.manager.impl.ui.AddonInstallCommand.resolveCoordinate(AddonInstallCommand.java:148)   at org.jboss.forge.addon.manager.impl.ui.AddonInstallCommand.access$000(AddonInstallCommand.java:35)   at org.jboss.forge.addon.manager.impl.ui.AddonInstallCommand$2.validate(AddonInstallCommand.java:96)   at org.jboss.forge.addon.ui.impl.input.AbstractInputComponent.validate(AbstractInputComponent.java:215)   at sun.reflect.GeneratedMethodAccessor249.invoke(Unknown Source)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   at java.lang.reflect.Method.invoke(Method.java:606)   at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor$1.call(ClassLoaderInterceptor.java:87)   at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:42)   at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor.invoke(ClassLoaderInterceptor.java:103)   at org.jboss.forge.addon.facets.AbstractFaceted_$$_javassist_3fee91e5-2d52-4567-b665-e68c8391dea2.validate(AbstractFaceted_$$_javassist_3fee91e5-2d52-4567-b665-e68c8391dea2.java)   at org.jboss.forge.addon.ui.impl.controller.SingleCommandControllerImpl.validate(SingleCommandControllerImpl.java:154)   at org.jboss.forge.addon.ui.impl.controller.SingleCommandControllerImpl.isValid(SingleCommandControllerImpl.java:167)   at org.jboss.forge.addon.ui.impl.controller.SingleCommandControllerImpl.canExecute(SingleCommandControllerImpl.java:104)   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   at java.lang.reflect.Method.invoke(Method.java:606)   at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback$2.call(ClassLoaderAdapterCallback.java:123)   at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:42)   at org.jboss.forge.furnace.proxy.ClassLoaderAdapterCallback.invoke(ClassLoaderAdapterCallback.java:96)   at org.jboss.forge.addon.ui.controller.CommandController_$$_javassist_068e38e3-7cc9-43b8-a644-7ac41f32decc.canExecute(CommandController_$$_javassist_068e38e3-7cc9-43b8-a644-7ac41f32decc.java)   at org.jboss.tools.forge.ui.internal.ext.wizards.ForgeWizard.canFinish(ForgeWizard.java:80)   at org.eclipse.jface.wizard.WizardDialog.updateButtons(WizardDialog.java:1377)   at org.eclipse.jface.wizard.WizardPage.setPageComplete(WizardPage.java:311)   at org.jboss.tools.forge.ui.internal.ext.wizards.ForgeWizardPage.handleEvent(ForgeWizardPage.java:157)   at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)   at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4454)   at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1388)   at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1412)   at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1393)   at org.eclipse.swt.widgets.Text.gtk_changed(Text.java:1457)   at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2031)   at org.eclipse.swt.widgets.Text.windowProc(Text.java:2746)   at org.eclipse.swt.widgets.Display.windowProc(Display.java:4662)   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:9106)   at org.eclipse.swt.widgets.Display.eventProc(Display.java:1253)   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:2477)   at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3407)   at org.eclipse.jface.window.Window.runEventLoop(Window.java:832)   at org.eclipse.jface.window.Window.open(Window.java:808)   at org.jboss.tools.forge.ui.internal.ext.dialog.WizardDialogHelper.openWizard(WizardDialogHelper.java:210)   at org.jboss.tools.forge.ui.internal.ext.dialog.WizardDialogHelper.openWizard(WizardDialogHelper.java:102)   at org.jboss.tools.forge.ui.internal.ext.dialog.UICommandListDialog$1$1.handleElementSelected(UICommandListDialog.java:233)   at org.jboss.tools.forge.ui.internal.ext.quickaccess.QuickAccessContents.handleSelection(QuickAccessContents.java:322)   at org.jboss.tools.forge.ui.internal.ext.quickaccess.QuickAccessContents.access$0(QuickAccessContents.java:312)   at org.jboss.tools.forge.ui.internal.ext.quickaccess.QuickAccessContents$1.keyPressed(QuickAccessContents.java:343)   at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:167)   at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)   at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4454)   at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1388)   at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1412)   at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1397)   at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:1424)   at org.eclipse.swt.widgets.Widget.gtk_key_press_event(Widget.java:824)   at org.eclipse.swt.widgets.Control.gtk_key_press_event(Control.java:3272)   at org.eclipse.swt.widgets.Text.gtk_key_press_event(Text.java:1807)   at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:2098)   at org.eclipse.swt.widgets.Control.windowProc(Control.java:5513)   at org.eclipse.swt.widgets.Text.windowProc(Text.java:2760)   at org.eclipse.swt.widgets.Display.windowProc(Display.java:4668)   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:9106)   at org.eclipse.swt.widgets.Display.eventProc(Display.java:1253)   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:2477)   at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3407)   at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)   at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)   at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)   at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)   at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:636)   at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)   at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:579)   at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)   at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:135)   at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)   at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)   at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)   at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   at java.lang.reflect.Method.invoke(Method.java:606)   at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)   at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)   at org.eclipse.equinox.launcher.Main.run(Main.java:1465)   at org.eclipse.equinox.launcher.Main.main(Main.java:1438) Caused by: java.lang.IllegalArgumentException: Bad artifact coordinates org.jboss.errai.forge:errai-forge-addon :jar:forge-addon:[,), expected format is <groupId>:<artifactId>[:<extension>[:<classifier>]]:<version>   at org.eclipse.aether.artifact.DefaultArtifact.<init>(DefaultArtifact.java:68)   at org.eclipse.aether.artifact.DefaultArtifact.<init>(DefaultArtifact.java:51)   at org.jboss.forge.furnace.manager.maven.addon.MavenAddonDependencyResolver.getVersions(MavenAddonDependencyResolver.java:272)   ... 100 more Posted by forums Original post: https://developer.jboss.org/message/912653#912653