[android-developers] NoClassDefFoundError - Rejecting re-init on previously-failed class

Hi,

Please somebody explain me what this error means and how to avoid it.

After a while my app Force Closes because of this error:

09-28 12:53:45.746 I/dalvikvm(29489): Rejecting re-init on previously-failed class Lcom/bartat/android/ui/task/AsyncTaskExt; v=0x0  09-28 12:53:45.748 D/AndroidRuntime(29489): Shutting down VM  09-28 12:53:45.755 I/am_crash( 1146): [29489,com.bartat.android.secret,572996,java.lang.NoClassDefFoundError,com.bartat.android.ui.task.AsyncTaskExt,CommandsActivity.java,726]  09-28 12:53:45.755 I/am_finish_activity( 1146): [1079225264,123,com.bartat.android.secret/.CommandsActivity,crashed]
09-28 12:53:45.750 W/dalvikvm(29489): threadid=1: thread exiting with uncaught exception (group=0x40015560)  09-28 12:53:45.752 E/AndroidRuntime(29489): FATAL EXCEPTION: main  09-28 12:53:45.752 E/AndroidRuntime(29489): java.lang.NoClassDefFoundError: com.bartat.android.ui.task.AsyncTaskExt  

This problem couldn't be solved by reinstalling the app. 

If I rename the AsyncTaskExt to AsyncTaskExt2 for example then it works again for long. But after a few weeks/months it started to get this error again.

What does it mean? Why it is thrown and how to avoid it without renaming the class?

Please help me,

Tamás

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