Ludwig Jaeck · Ludwig Jaeck
--- a/GUI/Model/Device/InstrumentItems.cpp
+++ b/GUI/Model/Device/InstrumentItems.cpp

    setBeamDistribution(ParameterDistribution::BeamInclinationAngle,
                        *beamItem()->inclinationAngleItem(), *simulation);
-
+    m_coosys.reset(simulation->createCoordSystem());
    return simulation;
 }

 const ICoordSystem* DepthProbeInstrumentItem::createCoordSystem() const
 {
+    if (!m_coosys)
+        throw std::runtime_error(
+            "DepthProbeSimulation::createCoordSystem: DepthProbeSimulation not yet initialized");