I have been away a long time and restarting B4PPC with 6.80. No excuse! I just started a new project and created the form with a button. Worked. I named the form other than Form1 and I got an error stating that 'show' was not a known control or object. The offending code - Main.show instead of Form1.show. The form with its name was presumably saved when I responded that I wished to keep the changes. The offending line was changed automatically as expected. Hence the title.