Solution for : eclipse error: Plug-in com.android.ide.eclipse.adt was unable to load class com.android.ide.eclipse.adt.internal.launch.LaunchConfigTabGroup. An error occurred while automatically activating bundle com.android.ide.eclipse.adt (269)

I haven’t started my Eclipse for a while but when today once I start my Eclipse, the following error is shown:

error: Plug-in com.android.ide.eclipse.adt was unable to load class com.android.ide.eclipse.adt.internal.launch.LaunchConfigTabGroup. An error occurred while automatically activating bundle com.android.ide.eclipse.adt (269)

As I have installed the Android plugin to my Eclipse previously, so from the log, I can understand that it should be related to the plugin stuff and my Android project.

After doing some research on the web for a while again, I tried the following steps in order to eliminate this error.

Here comes the solution.

***Please be reminded that kindly back up this folder first before your delete it. This is just to in case that even when you delete the folder but this error still retain. It is always good to backup first as you can roll back later. ***

The solution will be locating your eclipse workspace folder and then delete the folder under this path:                          .metadata\.plugins\org.eclipse.e4.workbench

After that restart your eclipse. It should be all fine now :)

Remarks:

The Eclipse version in this case is Kepler Release.

Moreover, Please be aware that .metadata\.plugin folder is the folder used to store the configuration of your workspace. Thus if you delete the folder, it may cause unstable of your workspace or even you cannot use it again. As a result, please reconfirm when you delete the folder I mention in the solution.