The sat file will only hold 58 stored diseqc 1.2 positions.
When you try to assign the 59th satellite a diseq 1.2 position, the receiver assigns it number 58. This is not near enough. The Gbox will hold 99 diseq 1.2 positions. The Optibox needs to also hold 99 diseqc 1.2 positions instead of 58. EB