Both problems might be related so I combine them.

I get the error: "This project has, at least once, been saved in a test version" "Compatibility is not garanteed"

I don't understand this since I use the same system and same program on my company laptop only

Second problem is that I can not display the results in Contrast-colors (it worked ealier today)

I go select a certain calculation area, choose to erase the diagrams and then choose to display the colors. Unfortunately no colors on my screen.

Anybody knows what to do now ?

No colors !!