Eclipse - Errors running builder 'Android Package Builder'

Question

I updated ADT from 22.x to the latest 23.x and now I'm getting the following error when trying to run the project:

Errors occurred during the build. Errors running builder 'Android Package Builder' on project 'Sample-project-1'. com/android/utils/GrabProcessOutput$IProcessOutput

Here's the error in the log:

java.lang.NoClassDefFoundError: com/android/utils/GrabProcessOutput$IProcessOutput at com.android.ide.eclipse.adt.internal.build.builders.PostCompilerBuilder.build(PostCompilerBuilder.java:212) at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:733) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206) at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:328) at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:403) at org.eclipse.core.internal.resources.Project$1.run(Project.java:618) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2345) at org.eclipse.core.internal.resources.Project.internalBuild(Project.java:597) at org.eclipse.core.internal.resources.Project.build(Project.java:124) at com.android.ide.eclipse.adt.internal.project.ProjectHelper.doFullIncrementalDebugBuild(ProjectHelper.java:1143) at com.android.ide.eclipse.adt.internal.launch.LaunchConfigDelegate.launch(LaunchConfigDelegate.java:155) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:858) at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:707) at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1018) at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1222) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53) Caused by: java.lang.ClassNotFoundException: com.android.utils.GrabProcessOutput$IProcessOutput cannot be found by com.android.ide.eclipse.adt_23.0.2.1259578 at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421) at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412) at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107) at java.lang.ClassLoader.loadClass(Unknown Source) ... 17 more

Of course this is all gibberish to me. Why is this happening and how do I fix it?

Answer 1

This has just happened to be because i have manually updated the ADT plugin.

I had to do a manual update of ADT plugin since eclipse refused to find an update via "Check for updates". After the manual update I started getting "package builder" errors.

What worked for me was to remove all the ADT related plugins such as..

DDMS
ADT
ANdroid Hierarchy Viewer
Android Native Development Tools
Android Traceview
Tracer for OpenGL ES

then, do a fresh ADT install and am good to go.

Hope that helps and is related to your problem.