Fix use of c_str when writing std::string in warnings and errors.  https://tracker.physiomeproject.org/show_bug.cgi?id=3477
Fix use of c_str when writing std::string in warnings and errors.  https://tracker.physiomeproject.org/show_bug.cgi?id=3477


OpenCMISS/zinc,OpenCMISS/zinc,OpenCMISS/zinc,OpenCMISS/zinc,hsorby/zinc,hsorby/zinc,hsorby/zinc,hsorby/zinc