Trouble with 20-bit HDCD

Greetings,

I purchased a CD that turned out, on delivery, to be a 20-bit HDCD published in 2002 (although the disk itself brand new). The music on it is very rarely recorded (Girolamo Kapsberger’s “Jesuit Opera”) and only available in this format.
My Project transport (Box RS) doesn’t recognize the disk, however. I presume that there is no solution to this problem (apart from buying a different transport) but I’m still interested in what kind of compatibility issue may cause the problem.

Thank you,

Csaba