Re: [eclipse-dev] Error after installing M4

[John Arthorne <John_Arthorne@xxxxxxxxxx>]

Don't unzip new builds on top of old
ones.  See also:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=44992
--

> I am getting following error, after I installed
M4 on top of my 
> earlier version of Eclipse and restarted.
>  
> java.lang.NoSuchMethodError: org.eclipse.core.runtime.Platform.
> getJobManager()Lorg/eclipse/core/runtime/jobs/IJobManager;
>  at org.eclipse.core.internal.resources.WorkManager.
> <init>(WorkManager.java:55)
>  at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:1673)
>  at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:1493)
>  at org.eclipse.core.resources.ResourcesPlugin.
> startup(ResourcesPlugin.java:292)
>  at org.eclipse.core.internal.plugins.PluginDescriptor$1.
> run(PluginDescriptor.java:728)
>  at org.eclipse.core.internal.runtime.InternalPlatform.
> run(InternalPlatform.java:889)
>  at org.eclipse.core.internal.plugins.PluginDescriptor.
> internalDoPluginActivation(PluginDescriptor.java:740)
>  at org.eclipse.core.internal.plugins.PluginDescriptor.
> doPluginActivation(PluginDescriptor.java:188)
>  at org.eclipse.core.internal.plugins.PluginClassLoader.
> activatePlugin(PluginClassLoader.java:112)
>  at org.eclipse.core.internal.plugins.PluginClassLoader.
> internalFindClassParentsSelf(PluginClassLoader.java:185)
>  at org.eclipse.core.internal.boot.DelegatingURLClassLoader.
> findClassParentsSelf(DelegatingURLClassLoader.java:490)
>  at org.eclipse.core.internal.boot.DelegatingURLClassLoader.
> loadClass(DelegatingURLClassLoader.java:882)