Cronweatherflow can not open local file for writing

There is no data in the cron program.
Just an ‘ok’ in the box on the left. This updates with another ‘ok’ pretty often.
The box on the right has the sensors names.
I have the wind/rain sensor and the outdoor temperature sensor.
The space in the middle of those two boxes is just showing a series of —
I have the station ID and the check box UDP is checked. (it makes no difference if I uncheck it).

Have attached a screen shot of the cron program.