Riva - I removed the display from the breadboard [too many wires to disconnect from the Uno ] and the code uploaded but still nothing showing on the display. I also plugged an external 9V power supply into the barrel jack of the board.
Edit - I investigated a little further and found out that the code will not upload with the display connected to the breadboard with either USB only power or with both USB and 9V supply connected simultaneously, but if I remove the display from the breadboard the code will upload with only USB power connected or both USB and 9V
Thanks Bill,I will have a look at the wiki/playground page, as that is the latest information, and see what I can work out,Pedro
Any clue as to what might be going on. Maybe I need to leave it for a while, but it is perplexing that it eventually initialised correctly and then suddenly went back to the initial error, Pedro
I am still using the multi stranded jumper leads until I can fit some solid core wires.