After importing the downloaded code, I run it on ecplise(emulator and my device in debugging mode). the following error happened. To be noted, I have used only interactive quiz and HTML doc and simple menu plugins. clicking on the menus to open my designed interactive quiz page, the following errors happen. since I am not code, I stuck what to do. I am appreciative of any assistance: Error log: 02-02 22:59:02.368: E/AndroidRuntime(537): FATAL EXCEPTION: main 02-02 22:59:02.368: E/AndroidRuntime(537): java.lang.NumberFormatException: Invalid long: "" 02-02 22:59:02.368: E/AndroidRuntime(537): at java.lang.Long.invalidLong(Long.java:125) 02-02 22:59:02.368: E/AndroidRuntime(537): at java.lang.Long.parseLong(Long.java:346) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.graphics.Color.parseColor(Color.java:208) 02-02 22:59:02.368: E/AndroidRuntime(537): at com.jughrafia.BT_color.getColorFromHexString(BT_color.java:46) 02-02 22:59:02.368: E/AndroidRuntime(537): at com.jughrafia.BT_screen_quiz.onCreateView(BT_screen_quiz.java:246) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:795) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:998) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.app.BackStackRecord.run(BackStackRecord.java:622) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1330) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.app.FragmentManagerImpl$1.run(FragmentManager.java:417) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.os.Handler.handleCallback(Handler.java:605) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.os.Handler.dispatchMessage(Handler.java:92) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.os.Looper.loop(Looper.java:137) 02-02 22:59:02.368: E/AndroidRuntime(537): at android.app.ActivityThread.main(ActivityThread.java:4340) 02-02 22:59:02.368: E/AndroidRuntime(537): at java.lang.reflect.Method.invokeNative(Native Method) 02-02 22:59:02.368: E/AndroidRuntime(537): at java.lang.reflect.Method.invoke(Method.java:511) 02-02 22:59:02.368: E/AndroidRuntime(537): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 02-02 22:59:02.368: E/AndroidRuntime(537): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 02-02 22:59:02.368: E/AndroidRuntime(537): at dalvik.system.NativeStart.main(Native Method)

The issue is at line 246 of the quiz java file. Not sure what's at that line, but seems to be trying to get the long numerical value of something

The BT_Color.java line gets me concerned. Do you have a color specified somewhere in the control panel for the quiz? If so, try removing it, or at least make sure it's specified correctly, and see if that helps. Mar

Thank you Chris1 and Mar, @Mar, Yes, the problem was with the colour. I just filled out every boxes of "quiz behaviour and layout", it get started working. thank you for assistance. NSaya

Just out of curiosity, what did you have specified for color? Were you using a hex value or a color name?

In the box for correct answer font color I forgot to either pick up my favorite color or type it correctly. I wanted to pick the color, but my internet went down, then wanted to type it, but didn't know the exact hex value. So postponed for the time that internet works to pick the exact color. In between I forgot to fill that box correctly. I had typed only "#" forgot to type the rest of the value. thank you once again for your assistance regards

Good to know for future debugging. Thanks for the feedback! Mark