RootTools ' kill failed: EPERM (Operation not permitted)' Problem

[Babak-Lotfalizadeh]

My App Freez When i Use RootTools Commands i write a simple Code Like :

            RootTools.debugMode = true;  

            if (RootTools.isRootAvailable())
             {
                 print("Root found.\n");
             }
             else
             {
                 print("Root not found");
             }

And My AndroidManifest.xml Have Default Code.

But My logCat Showing This Errors (Tag = 'System' ) :

    libcore.io.ErrnoException: kill failed: EPERM (Operation not permitted)
at libcore.io.Posix.kill(Native Method)
at libcore.io.ForwardingOs.kill(ForwardingOs.java:81)
at java.lang.ProcessManager$ProcessImpl.destroy(ProcessManager.java:260)
at com.stericson.RootShell.execution.Shell.<init>(Shell.java:195)
at com.stericson.RootShell.execution.Shell.startRootShell(Shell.java:848)
at com.stericson.RootShell.RootShell.getShell(RootShell.java:300)
at com.stericson.RootShell.RootShell.getShell(RootShell.java:337)
at com.stericson.RootShell.RootShell.getShell(RootShell.java:347)
at com.stericson.RootShell.RootShell.exists(RootShell.java:156)
at com.stericson.RootShell.RootShell.exists(RootShell.java:112)
at com.stericson.RootShell.RootShell.findBinary(RootShell.java:251)
at com.stericson.RootShell.RootShell.findBinary(RootShell.java:183)
at com.stericson.RootShell.RootShell.isRootAvailable(RootShell.java:404)
at com.stericson.RootTools.RootTools.isRootAvailable(RootTools.java:650)
at ir.BLT.instagramdownloader.MainActivity.Copy_From_Insta_Cach(MainActivity.java:806)
at ir.BLT.instagramdownloader.MainActivity.onOptionsItemSelected(MainActivity.java:767)
at android.app.Activity.onMenuItemSelected(Activity.java:2609)
at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:1056)
at    com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
 at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:149)
at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
at com.android.internal.view.menu.MenuPopupHelper.onItemClick(MenuPopupHelper.java:315)
at com.android.internal.view.menu.ActionMenuPresenter$OverflowPopup.onItemClick(ActionMenuPres    enter.java:798)
at android.widget.AdapterView.performItemClick(AdapterView.java:298)
at android.widget.AbsListView.performItemClick(AbsListView.java:1223)
at android.widget.ListView.performItemClick(ListView.java:4506)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:2967)
at android.widget.AbsListView$1.run(AbsListView.java:3653)
at android.os.Handler.handleCallback(Handler.java:725)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:5751)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1083)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:850)
at de.robv.android.xposed.XposedBridge.main(XposedBridge.java:132)
at dalvik.system.NativeStart.main(Native Method)

Run in Htc One X , Android 4.2.2 (Rooted), SU app = SuperSU.