Android Question INTENT ID lib Error

--------- beginning of /dev/log/main
--------- beginning of /dev/log/system
** Service (svrautostart) Create **
** Service (svrautostart) Start **
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
(NullPointerException) java.lang.NullPointerException
main_button4_click (B4A line: 62)
INTENT.OpenChannel_Youtube("Basic4Android")
java.lang.NullPointerException
 at anywheresoftware.b4a.keywords.Common.StartActivity(Common.java:835)
 at b4a.example.intentid._openchannel_youtube(intentid.java:187)
 at aaaaa.test2.main._button4_click(main.java:480)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:515)
 at anywheresoftware.b4a.BA.raiseEvent2(BA.java:186)
 at anywheresoftware.b4a.BA.raiseEvent2(BA.java:170)
 at anywheresoftware.b4a.BA.raiseEvent(BA.java:166)
 at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:78)
 at android.view.View.performClick(View.java:4438)
 at android.view.View$PerformClick.run(View.java:18422)
 at android.os.Handler.handleCallback(Handler.java:733)
 at android.os.Handler.dispatchMessage(Handler.java:95)
 at android.os.Looper.loop(Looper.java:136)
 at android.app.ActivityThread.main(ActivityThread.java:5017)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:515)
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
 at dalvik.system.NativeStart.main(Native Method)