I often get these errors at edit time when the editor serializes:
The same field name is serialized multiple times in the class or its parent class. This is not supported: Base(QuickStart) m_InputIndex
The same field name is serialized multiple times in the class or its parent class. This is not supported: Base(QuickStop) m_InputIndex
The same field name is serialized multiple times in the class or its parent class. This is not supported: Base(QuickStart) m_InputIndex
The same field name is serialized multiple times in the class or its parent class. This is not supported: Base(QuickStop) m_InputIndex