Hello Eric, j'ai ce message d erreur en rechargeant une vieille simu. La simu a tourné en 4.4.0 et j ai essayé de la charge en 4.4.2 et en 4.4.5. Vois tu d ou ca vient ? Merci fr.ifremer.isisfish.IsisFishRuntimeException: Impossible de charger une ancienne simulation at fr.ifremer.isisfish.ui.simulator.ParamsHandler.loadOldSimulation(ParamsHandler.java:263) at fr.ifremer.isisfish.ui.simulator.ParamsHandler.lambda$loadOldSimulation$3(ParamsHandler.java:304) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$500(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) Caused by: java.lang.NullPointerException at jaxx.runtime.context.DefaultJAXXContext.setContextValue(DefaultJAXXContext.java:77) at jaxx.runtime.context.DefaultJAXXContext.setContextValue(DefaultJAXXContext.java:72) at fr.ifremer.isisfish.ui.simulator.SimulatorContext.setRegionStorage(SimulatorContext.java:86) at fr.ifremer.isisfish.ui.simulator.ParamsHandler.loadOldSimulation(ParamsHandler.java:238) ... 15 more