YAY..
I searched the tree and as you expected found two copies of the include.
1 was the one I had put in the library and the other was in the GuessTheNumber folder.
Compied and uploaded ..
Worked Gr8.
Thanks, my first Arduino Experience is now a success.
Took me 3 days of soldering and building on my last Microcontroler test about 7 years ago.. and that was just to sequence 4 led's
Rob