This board has the Arduino bootloader on it, and I can program it with the Arduino IDE.
I have selected the correct board, com port, core and compiler. The prior sketch is running, as verified by my using the terminal window to see its output.
But when I try to download a sketch I get this error: You have no programmer selected. You must select a programmer before you can upload your sketch.
There is no programmer option in the Hardware tab.
I cannot find any other reference to the problem, so it appears I am doing something uniquely incorrect. What is it?
I am running 0.10.6 on a Windows 10 box.