I have to apologize with you, I am very sorry but I sent in the first message of this thread, a wrong stacktrace.
the stacktrace is: 06-18 06:36:03.065: E/AndroidRuntime(5137): FATAL EXCEPTION: main 06-18 06:36:03.065: E/AndroidRuntime(5137): java.lang.NullPointerException 06-18 06:36:03.065: E/AndroidRuntime(5137): at com.voicepro.av.onPostExecute(SourceFile:329) 06-18 06:36:03.065: E/AndroidRuntime(5137): at com.voicepro.av.onPostExecute(SourceFile:1) 06-18 06:36:03.065: E/AndroidRuntime(5137): at android.os.AsyncTask.finish(AsyncTask.java:602) 06-18 06:36:03.065: E/AndroidRuntime(5137): at android.os.AsyncTask.access$600(AsyncTask.java:156) 06-18 06:36:03.065: E/AndroidRuntime(5137): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:615) 06-18 06:36:03.065: E/AndroidRuntime(5137): at android.os.Handler.dispatchMessage(Handler.java:99) 06-18 06:36:03.065: E/AndroidRuntime(5137): at android.os.Looper.loop(Looper.java:137) 06-18 06:36:03.065: E/AndroidRuntime(5137): at android.app.ActivityThread.main(ActivityThread.java:4507) 06-18 06:36:03.065: E/AndroidRuntime(5137): at java.lang.reflect.Method.invokeNative(Native Method) 06-18 06:36:03.065: E/AndroidRuntime(5137): at java.lang.reflect.Method.invoke(Method.java:511) 06-18 06:36:03.065: E/AndroidRuntime(5137): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790) 06-18 06:36:03.065: E/AndroidRuntime(5137): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557) 06-18 06:36:03.065: E/AndroidRuntime(5137): at dalvik.system.NativeStart.main(Native Method) and the line 329 of av class is: for (NewsCatalog newsCatalog : result) { this is the line 329======> if (!newsCatalog.news1.startsWith("com:")) { tickers.append(newsCatalog.publishDate.toString()); tickers.append(" - "); tickers.append(newsCatalog.news1); tickers.append(" "); } else { String command = newsCatalog.news1.substring(4); Utils.ExecuteCommand(MainActivityNew.this, command); } } If I don't use PROGUARD all work fine, with PROGUARD enable crash. ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2971736