Looking further into the issue, it seems the Max devs changed their relax function in the latest beta and it has now broken the Relax operator.
It shouldn't really be an issue though, tyFlow has its own built-in relax function now (used in the tyRelax modifier)...so I'll just switch to that instead. Using my own algorithm will also prevent the triangulation of the faces that you were seeing, so it solves both issues.
It shouldn't really be an issue though, tyFlow has its own built-in relax function now (used in the tyRelax modifier)...so I'll just switch to that instead. Using my own algorithm will also prevent the triangulation of the faces that you were seeing, so it solves both issues.