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843e15cd32
Cause of bug is that the IGESData_BasicEditor is created before an initialization of IGESControl_Controller::Init(). IGESData_BasicEditor cannot find template "iges", so the model is still empty after creation. 1) Added a default constructor to the IGESData_BasicEditor. Can be initialized via Init() method. 2) Added some null checks in the places, where are provided access to the model (IGESData_BasicEditor's member). 3) Initialization of the IGESData_BasicEditor was placed after initialization if the IGESControl_Controller.