In rare occasions, the Dragonfly algorithm generates an erroneous model at the very beginning of the mapping or positioning process. If so, you will notice that the system switches to LOST right after map initialization. When this happens, it is usually impossible to get a position. The workaround to fix this issue is to create a new map (or re-load the good map). Be aware that clearing the path won’t have any effect as it does not delete the erroneous model but just clears the what is shown inside the preview!