Expression    : !object->used_ai_locations() || ai().level_graph().valid_vertex_id(object->m_tNodeID)
Function      : CALifeSwitchManager::add_online
File          : E:\stalker\patch_1_0004\xr_3da\xrGame\alife_switch_manager.cpp
Line          : 64
Description   : Invalid vertex for object 
Arguments     : af_fireball20996