Проблема Android MySQL только в Android 4.0?

Я получаю эту ошибку на устройстве и эмуляторе Ice Cream Sandwich (Android 4.0). Но приложение отлично работает на эмуляторе Android 2.3.

06-19 00:34:38.357: E/AndroidRuntime(535): FATAL EXCEPTION: main
06-19 00:34:38.357: E/AndroidRuntime(535): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.kickinglettuce.rate_this/com.kickinglettuce.rate_this.Main}: java.lang.NullPointerException
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.app.ActivityThread.access$600(ActivityThread.java:123)
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.os.Handler.dispatchMessage(Handler.java:99)
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.os.Looper.loop(Looper.java:137)
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.app.ActivityThread.main(ActivityThread.java:4424)
06-19 00:34:38.357: E/AndroidRuntime(535):  at java.lang.reflect.Method.invokeNative(Native Method)
06-19 00:34:38.357: E/AndroidRuntime(535):  at java.lang.reflect.Method.invoke(Method.java:511)
06-19 00:34:38.357: E/AndroidRuntime(535):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-19 00:34:38.357: E/AndroidRuntime(535):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-19 00:34:38.357: E/AndroidRuntime(535):  at dalvik.system.NativeStart.main(Native Method)
06-19 00:34:38.357: E/AndroidRuntime(535): Caused by: java.lang.NullPointerException
06-19 00:34:38.357: E/AndroidRuntime(535):  at org.json.JSONTokener.nextCleanInternal(JSONTokener.java:116)
06-19 00:34:38.357: E/AndroidRuntime(535):  at org.json.JSONTokener.nextValue(JSONTokener.java:94)
06-19 00:34:38.357: E/AndroidRuntime(535):  at org.json.JSONArray.(JSONArray.java:87)
06-19 00:34:38.357: E/AndroidRuntime(535):  at org.json.JSONArray.(JSONArray.java:103)
06-19 00:34:38.357: E/AndroidRuntime(535):  at com.kickinglettuce.rate_this.Main.onCreate(Main.java:81)
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.app.Activity.performCreate(Activity.java:4465)
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
06-19 00:34:38.357: E/AndroidRuntime(535):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
06-19 00:34:38.357: E/AndroidRuntime(535):  ... 11 more

Начальная активность почти идентична этой:

http://blog.sptechnolab.com/2011/02/10/android/android-connecting-to-mysql-using-php/

Вот пустая строка в моем коде:
jArray = new JSONArray(result);