empty box on dimension lines

Hi I'm a newbie and I have searched these forms for an answer to my problem without success. When I use the dimension function I only get empty boxes instead of numbers. But when I look at print preview I see the numbers.  

Switch Draft mode off.
https://forum.librecad.org/suddenly-all-my-dimensions-have-turned-into-boxes-tp5722561p5722562.html

that was it. thank you so much. I was going nuts.