The next gen update used a completely different compiler, and that created a highly different executable, that’s why the update for script extender took so long and that’s why the script extender for next gen edition is unable to load “old” script extender mods.
It is the same that happened with Skyrim Anniversary Edition.
Technical question - does the script extender use signature/pattern scanning at all?
It sounds to me that it may have broken because it doesn’t use it.
You could say “oh they recompiled it so the registers changed” but I highly doubt they changed the code that much or touched optimization flags.
The next gen update used a completely different compiler, and that created a highly different executable, that’s why the update for script extender took so long and that’s why the script extender for next gen edition is unable to load “old” script extender mods.
It is the same that happened with Skyrim Anniversary Edition.