"Object reference not set to an instance of an object"
in <0x00030> System.Collections.Generic.List`1[System.Type]:AddEnumerable (IEnumerable`1 )
in <0x000ea> System.Collections.Generic.List`1[System.Type]:.ctor (IEnumerable`1 )
in <0x0009a> Sector:CustomLispWrite (Lisp.Writer Writer)
in <0x00b3d> LispReader.LispRootSerializer:Write (Lisp.Writer writer, System.String name, System.Object Object)
in <0x00724> LispReader.LispRootSerializer:Write (Lisp.Writer writer, System.String name, System.Object Object)
in <0x0005f> LispReader.LispSerializer:WriteType (Lisp.Writer writer, System.Type type, System.String name, System.Object Object)
in <0x00032> LispReader.LispSerializer:Write (Lisp.Writer Writer, System.String name, System.Object Object)
in <0x0009a> LispReader.LispSerializer:Write (System.IO.TextWriter TextWriter, System.String Dest, System.Object Object)
in <0x00053> LispReader.LispSerializer:Write (System.String FileName, System.Object Object)
in <0x0018a> Application:Save (Boolean chooseName)