Problem with "topology(simulation)" in experiment with windows

[ptaillandier]

I get this error message the first time I run the simulation (with windows 10):

1 occurence in Open0 at cycle 0: Java error: nil value detected
in show_map_selected <- distance_to(show_map_button,#user_location) < (w_width / 4);
NullPointerException: Cannot invoke "msi.gama.metamodel.shape.GamaPoint.euclidianDistanceTo(msi.gama.metamodel.shape.GamaPoint)" because "g1" is null
msi.gama.metamodel.topology.continuous.ContinuousTopology.distanceBetween(ContinuousTopology.java:122)
msi.gaml.operators.Spatial$Relations.distance_to(Spatial.java:5239)
gaml.additions.core.GamlAdditions.lambda$954(GamlAdditions.java:1014)
msi.gaml.expressions.operators.BinaryOperator._value(BinaryOperator.java:93)
msi.gaml.expressions.AbstractExpression.value(AbstractExpression.java:81)
msi.gaml.expressions.operators.BinaryOperator._value(BinaryOperator.java:91)
msi.gaml.expressions.AbstractExpression.value(AbstractExpression.java:81)
when applying the distance_to operator on nil and {0.0,-0.0,0.0}
in show_map_selected <- distance_to(show_map_button,#user_location) < (w_width / 4);
in using topology(simulation) {
show_map_selected <- distance_to(show_map_button,#user_location) < (w_width / 4);
show_waterflow_selected <- distance_to(show_waterflow_button,#user_location) < (w_width / 4);
}

in
in agent Open0