mevenide 1.0.2 dont run in eclipse 3.1.2

When im going to open eclipse window/maven preference page
unable to create selected preference page.......
it occurs in all option of eclipse window/maven preference page

attach show it

When i start eclipse log write:
!SESSION 2007-03-06 10:23:07.948 -----------------------------------------------

eclipse.buildId=M20060118-1600
java.version=1.5.0_06
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=es_ES
Command-line arguments: -os win32 -ws win32 -arch x86 -clean -consoleLog

!ENTRY org.eclipse.osgi 2007-03-06 10:23:16.901
!MESSAGE An error occurred while automatically activating bundle org.mevenide.ui
(119).
!STACK 0
org.osgi.framework.BundleException: The activator org.mevenide.ui.eclipse.Meveni
de for bundle org.mevenide.ui is invalid
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleAct
ivator(AbstractBundle.java:149)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(Bund
leContextImpl.java:965)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(Bundl
eHost.java:316)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(Abstrac
tBundle.java:264)
at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(Ec
lipseClassLoader.java:116)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(
BundleLoader.java:337)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Bundl
eLoader.java:389)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Bundl
eLoader.java:350)
at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass
(AbstractClassLoader.java:78)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(Bundl
eLoader.java:275)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleH
ost.java:227)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(Abs
tractBundle.java:1248)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecuta
bleExtension(ConfigurationElement.java:152)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecuta
bleExtension(ConfigurationElement.java:142)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecuta
bleExtension(ConfigurationElement.java:129)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createE
xecutableExtension(ConfigurationElementHandle.java:48)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:24
0)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)

at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlug
in.java:236)
at org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java
:118)
at org.eclipse.ui.internal.WWinPluginPulldown.getPulldownDelegate(WWinPl
uginPulldown.java:203)
at org.eclipse.ui.internal.WWinPluginPulldown$MenuProxy.getMenu(WWinPlug
inPulldown.java:151)
at org.eclipse.jface.action.ActionContributionItem.fill(ActionContributi
onItem.java:259)
at org.eclipse.jface.action.SubContributionItem.fill(SubContributionItem
.java:65)
at org.eclipse.jface.action.MenuManager.update(MenuManager.java:627)
at org.eclipse.jface.action.MenuManager.updateAll(MenuManager.java:721)
at org.eclipse.jface.action.MenuManager.update(MenuManager.java:646)
at org.eclipse.jface.action.MenuManager.updateAll(MenuManager.java:721)
at org.eclipse.ui.internal.WorkbenchWindow.updateActionBars(WorkbenchWin
dow.java:2485)
at org.eclipse.ui.internal.WorkbenchWindow.updateActionSets(WorkbenchWin
dow.java:2555)
at org.eclipse.ui.internal.WorkbenchWindow$5.run(WorkbenchWindow.java:23
75)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)

at org.eclipse.ui.internal.WorkbenchWindow.setActivePage(WorkbenchWindow
.java:2338)
at org.eclipse.ui.internal.WorkbenchWindow.restoreState(WorkbenchWindow.
java:1861)
at org.eclipse.ui.internal.Workbench.doRestoreState(Workbench.java:2566)

at org.eclipse.ui.internal.Workbench.access$14(Workbench.java:2515)
at org.eclipse.ui.internal.Workbench$19.run(Workbench.java:1514)
at org.eclipse.ui.internal.Workbench$16.run(Workbench.java:1263)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalCont
ext.java:346)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:291)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDi
alog.java:447)
at org.eclipse.ui.internal.Workbench.runStartupWithProgress(Workbench.ja
va:1258)
at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1512)
at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1491)
at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1374)
at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatfo
rm.java:1044)
at org.eclipse.core.runtime.Platform.run(Platform.java:783)
at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1318)
at org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(WorkbenchCon
figurer.java:183)
at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvi
sor.java:700)
at org.eclipse.ui.internal.Workbench.init(Workbench.java:1034)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1636)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.jav
a:367)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:10
3)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformAct
ivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja
va:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja
va:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.main(Main.java:948)
Caused by: java.lang.ExceptionInInitializerError
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleAct
ivator(AbstractBundle.java:144)
... 66 more
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.comm
ons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.C
lass;@1f82253 for org.apache.commons.logging.impl.Log4JLogger
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactory
Impl.java:532)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactory
Impl.java:272)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactory
Impl.java:246)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:395)
at org.mevenide.ui.eclipse.Mevenide.<clinit>(Mevenide.java:71)
... 73 more
Caused by: org.apache.commons.logging.LogConfigurationException: No suitable Log
constructor [Ljava.lang.Class;@1f82253 for org.apache.commons.logging.impl.Log4
JLogger
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogF
actoryImpl.java:432)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactory
Impl.java:525)
... 77 more
Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Logger
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.getConstructor(Unknown Source)
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogF
actoryImpl.java:429)
... 78 more
Root exception:
java.lang.ExceptionInInitializerError
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadBundleAct
ivator(AbstractBundle.java:144)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(Bund
leContextImpl.java:965)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(Bundl
eHost.java:316)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(Abstrac
tBundle.java:264)
at org.eclipse.core.runtime.adaptor.EclipseClassLoader.findLocalClass(Ec
lipseClassLoader.java:116)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findLocalClass(
BundleLoader.java:337)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Bundl
eLoader.java:389)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Bundl
eLoader.java:350)
at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass
(AbstractClassLoader.java:78)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(Bundl
eLoader.java:275)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleH
ost.java:227)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(Abs
tractBundle.java:1248)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecuta
bleExtension(ConfigurationElement.java:152)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecuta
bleExtension(ConfigurationElement.java:142)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecuta
bleExtension(ConfigurationElement.java:129)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createE
xecutableExtension(ConfigurationElementHandle.java:48)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:24
0)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)

at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlug
in.java:236)
at org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java
:118)
at org.eclipse.ui.internal.WWinPluginPulldown.getPulldownDelegate(WWinPl
uginPulldown.java:203)
at org.eclipse.ui.internal.WWinPluginPulldown$MenuProxy.getMenu(WWinPlug
inPulldown.java:151)
at org.eclipse.jface.action.ActionContributionItem.fill(ActionContributi
onItem.java:259)
at org.eclipse.jface.action.SubContributionItem.fill(SubContributionItem
.java:65)
at org.eclipse.jface.action.MenuManager.update(MenuManager.java:627)
at org.eclipse.jface.action.MenuManager.updateAll(MenuManager.java:721)
at org.eclipse.jface.action.MenuManager.update(MenuManager.java:646)
at org.eclipse.jface.action.MenuManager.updateAll(MenuManager.java:721)
at org.eclipse.ui.internal.WorkbenchWindow.updateActionBars(WorkbenchWin
dow.java:2485)
at org.eclipse.ui.internal.WorkbenchWindow.updateActionSets(WorkbenchWin
dow.java:2555)
at org.eclipse.ui.internal.WorkbenchWindow$5.run(WorkbenchWindow.java:23
75)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)

at org.eclipse.ui.internal.WorkbenchWindow.setActivePage(WorkbenchWindow
.java:2338)
at org.eclipse.ui.internal.WorkbenchWindow.restoreState(WorkbenchWindow.
java:1861)
at org.eclipse.ui.internal.Workbench.doRestoreState(Workbench.java:2566)

at org.eclipse.ui.internal.Workbench.access$14(Workbench.java:2515)
at org.eclipse.ui.internal.Workbench$19.run(Workbench.java:1514)
at org.eclipse.ui.internal.Workbench$16.run(Workbench.java:1263)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalCont
ext.java:346)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:291)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDi
alog.java:447)
at org.eclipse.ui.internal.Workbench.runStartupWithProgress(Workbench.ja
va:1258)
at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1512)
at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1491)
at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1374)
at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatfo
rm.java:1044)
at org.eclipse.core.runtime.Platform.run(Platform.java:783)
at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1318)
at org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(WorkbenchCon
figurer.java:183)
at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvi
sor.java:700)
at org.eclipse.ui.internal.Workbench.init(Workbench.java:1034)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1636)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.jav
a:367)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:10
3)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformAct
ivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja
va:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja
va:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.main(Main.java:948)
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.comm
ons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.C
lass;@1f82253 for org.apache.commons.logging.impl.Log4JLogger
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactory
Impl.java:532)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactory
Impl.java:272)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactory
Impl.java:246)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:395)
at org.mevenide.ui.eclipse.Mevenide.<clinit>(Mevenide.java:71)
... 73 more
Caused by: org.apache.commons.logging.LogConfigurationException: No suitable Log
constructor [Ljava.lang.Class;@1f82253 for org.apache.commons.logging.impl.Log4
JLogger
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogF
actoryImpl.java:432)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactory
Impl.java:525)
... 77 more
Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Logger
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.getConstructor(Unknown Source)
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogF
actoryImpl.java:429)
... 78 more

!ENTRY org.eclipse.ui 4 4 2007-03-06 10:23:17.338
!MESSAGE Could not create action delegate for id: org.mevenide.maven.build
Could not create action delegate for id: org.mevenide.maven.build
Reason:

!ENTRY org.eclipse.core.runtime 4 1 2007-03-06 10:23:17.354
!MESSAGE Plug-in org.mevenide.ui was unable to load class org.mevenide.ui.eclips
e.nature.CustomMavenLaunchManager.
!STACK 0
java.lang.ClassNotFoundException: org.mevenide.ui.eclipse.nature.CustomMavenLaun
chManager
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Bundl
eLoader.java:405)
at org.eclipse.osgi.framework.internal.core.BundleLoader.findClass(Bundl
eLoader.java:350)
at org.eclipse.osgi.framework.adaptor.core.AbstractClassLoader.loadClass
(AbstractClassLoader.java:78)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.eclipse.osgi.framework.internal.core.BundleLoader.loadClass(Bundl
eLoader.java:275)
at org.eclipse.osgi.framework.internal.core.BundleHost.loadClass(BundleH
ost.java:227)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.loadClass(Abs
tractBundle.java:1248)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecuta
bleExtension(ConfigurationElement.java:152)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecuta
bleExtension(ConfigurationElement.java:142)
at org.eclipse.core.internal.registry.ConfigurationElement.createExecuta
bleExtension(ConfigurationElement.java:129)
at org.eclipse.core.internal.registry.ConfigurationElementHandle.createE
xecutableExtension(ConfigurationElementHandle.java:48)
at org.eclipse.ui.internal.WorkbenchPlugin$1.run(WorkbenchPlugin.java:24
0)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)

at org.eclipse.ui.internal.WorkbenchPlugin.createExtension(WorkbenchPlug
in.java:236)
at org.eclipse.ui.internal.PluginAction.createDelegate(PluginAction.java
:118)
at org.eclipse.ui.internal.WWinPluginPulldown.getPulldownDelegate(WWinPl
uginPulldown.java:203)
at org.eclipse.ui.internal.WWinPluginPulldown$MenuProxy.getMenu(WWinPlug
inPulldown.java:151)
at org.eclipse.jface.action.ActionContributionItem.fill(ActionContributi
onItem.java:259)
at org.eclipse.jface.action.SubContributionItem.fill(SubContributionItem
.java:65)
at org.eclipse.jface.action.MenuManager.update(MenuManager.java:627)
at org.eclipse.jface.action.MenuManager.updateAll(MenuManager.java:721)
at org.eclipse.jface.action.MenuManager.update(MenuManager.java:646)
at org.eclipse.jface.action.MenuManager.updateAll(MenuManager.java:721)
at org.eclipse.ui.internal.WorkbenchWindow.updateActionBars(WorkbenchWin
dow.java:2485)
at org.eclipse.ui.internal.WorkbenchWindow.updateActionSets(WorkbenchWin
dow.java:2555)
at org.eclipse.ui.internal.WorkbenchWindow$5.run(WorkbenchWindow.java:23
75)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)

at org.eclipse.ui.internal.WorkbenchWindow.setActivePage(WorkbenchWindow
.java:2338)
at org.eclipse.ui.internal.WorkbenchWindow.restoreState(WorkbenchWindow.
java:1861)
at org.eclipse.ui.internal.Workbench.doRestoreState(Workbench.java:2566)

at org.eclipse.ui.internal.Workbench.access$14(Workbench.java:2515)
at org.eclipse.ui.internal.Workbench$19.run(Workbench.java:1514)
at org.eclipse.ui.internal.Workbench$16.run(Workbench.java:1263)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalCont
ext.java:346)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:291)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDi
alog.java:447)
at org.eclipse.ui.internal.Workbench.runStartupWithProgress(Workbench.ja
va:1258)
at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1512)
at org.eclipse.ui.internal.Workbench.access$12(Workbench.java:1491)
at org.eclipse.ui.internal.Workbench$17.run(Workbench.java:1374)
at org.eclipse.core.internal.runtime.InternalPlatform.run(InternalPlatfo
rm.java:1044)
at org.eclipse.core.runtime.Platform.run(Platform.java:783)
at org.eclipse.ui.internal.Workbench.restoreState(Workbench.java:1318)
at org.eclipse.ui.internal.WorkbenchConfigurer.restoreState(WorkbenchCon
figurer.java:183)
at org.eclipse.ui.application.WorkbenchAdvisor.openWindows(WorkbenchAdvi
sor.java:700)
at org.eclipse.ui.internal.Workbench.init(Workbench.java:1034)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1636)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.jav
a:367)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:10
3)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformAct
ivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja
va:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.ja
va:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.main(Main.java:948)
Plug-in org.mevenide.ui was unable to load class org.mevenide.ui.eclipse.nature.
CustomMavenLaunchManager.