This happened to me several times, and with different versions of the software.

Basically, the project is normal and functional, then after trying to calculate again after a simple or big change (doesn’t matter), the program stops showing (or doesn’t load correctly) false colors, isolines or value charts.

Usually, occur with big files.

Several times a had to restart the project due to this type of error.

Observation: It appears that the program calculates correctly but only doesn’t show, because on 3D visualization, if I put the false colors filter, it shows normally. Only on the 2D it doesn’t load, and then I can’t validate the correct value of the illumination on the working planes.