I did do a clean and rebuild to no avail. I finally uninstalled the versions I had tried, 1.5 and 1.11, and installed 1.12 and the problem went away.Thanks for the support,Dave

Hi Semer,That's a relief, then. I'll just press on with the software tools.Thanks for the referral to the tutorial series. I am actually using that series. Early days but very useful.Best regards,DavePS: thank you for the support. I am impressed!

Hi Semer,Thank you for your response. I have actually gotten around the problem by removing all older versions of the IDE (1.5.1 and 1.11.0), installing the latest (1.11.2), and using a new workspace. Still not a clue as to why I could not, following...