Many thanks Ben for the prompt fix.
All LCDI2C commands now work with backlight on, also backlight on and off commands work ok.
Regards.
Andy.

This problem also occurs in V9 on I2C LCD 2004 display from AZ delivery and pic 16F18877. Backlight is turned off after execution of any I2C LCD command with the exception of any of type "print" which has to be followed by a "back light on" for each statement to display the resul...