Angles: definition instead of value
I've encountered a problem, serious for me: after having created some vectors in 3D, I wanted to measure the angle between them. Very surprisingly I got the angle definition, instead of its value.
I've been using GeoGebra for some years. It was very helpful with visualizing problems described in two articles. Up to date all seemed perfect, values of the angles were up in the Algebra window (fig.: ggAnglesProblem00.png). Today instead of values I got textual definitions of the angles, although values are in the labels (fig.: ggAnglesProblem01.png).
Is there a way to fix this, or should I make the whole model anew? (In a new file there is no such problem.)