Cannot create new Android application project or access Android preferences using Eclipse Kepler

Question

I am using Ubuntu 13.04 and Eclipse Keplar.When I try to create a new Android application project the following message is displayed:

The selected wizard could not be started. Plug-in com.android.ide.eclipse.adt was unable to load class com.android.ide.eclipse.adt.internal.wizards.templates.NewProjectWizard. An error occurred while automatically activating bundle com.android.ide.eclipse.adt (241).

I cannot access the Window->Preferences->Android page,when I try the following message is displayed:

Unable to create the selected preference page. An error occured while automatically activating bundle.com.android.ide.eclipse.adt.

No updates for the ADT plugin or the Android SDK were found.

What should I do to restore the ADT plugin to good working order? Thanking You

Answer 1

Ran into this same problem today running a Windows 7 machine. It has been a while since this question has been asked, but having an answer here might prove useful since this thread is ranking highly on Google for the error message:

I found that cleaning all projects in Eclipse and restarting it once it was finished solved the issue and I was able to successfully create a new Android project afterwards.

Eclipse menu: Project >> Clean

Similar problem/answer found on stackoverflow.

Answer 2

From console, run eclipse -clean (you'll need to make sure eclipse binary is in your PATH, or use full path to the binary).