The weight window with parallel world was used in a projection, when the command from DetectorMessenger class was not implemented, evenything worked well, but after the command about detector size was used, the error occured:
-------- EEEE ------- G4Exception-START -------- EEEE -------
*** G4Exception : GeomBias0002
issued by : G4WeightWindowStore::Error()
GetLowerWitgh() - Cell does not exist!
*** Fatal Exception *** core dump ***
G4WT7 > G4Track (0x7f7ca85e8af0) - track ID = 1, parent ID = 0
G4WT7 > Particle type : neutron - creator process : not available
G4WT7 > Kinetic energy : 0.0253 eV - Momentum direction : (0,0,1)
G4WT7 > Step length : 2.37322 mm - total energy deposit : 0 eV
G4WT7 > Pre-step point : (18.1549,3.18773,-40.001) - Physical volume : World (G4_Galactic)
G4WT7 > - defined by : not available
G4WT7 > Post-step point : (18.1549,3.18773,-37.6278) - Physical volume : World (G4_Galactic)
G4WT7 > - defined by : ParallelBiasingWorld - step status : 3
G4WT7 > *** Note: Step information might not be properly updated.
G4WT7 >
-------- EEEE -------- G4Exception-END --------- EEEE -------
G4WT7 >
QObject::setParent: Cannot set parent, new parent is in a different thread
Is something special needed to add to the B02ImportanceDetectorConstruction class from examples/extended/biasing/B02/src/B02ImportanceDetectorConstruction.cc?