game crash connected to legacy sound sets

[W-Livi]

I'm running Enigma 1.30 on Windows 10, with several Oxyd games' data added to the legacy_dat directory, and I have encountered an issue where changing sound sets can cause the game to crash.
Switching from Enigma to anything else is fine. Switching between Oxyd, Per.Oxyd, and Oxyd Extra is fine. Switching between Oxyd Magnum and Magnum Gold is fine. But switching to Enigma from any Oxyd set will crash the game, as will switching to the Magnums from any other Oxyd, or vice-versa.
It may be worth noting that this crash triggers both in the Audio options menu - when explicitly selecting sound sets - or in the level pack menu when moving into or out of the relevant Dongleware packs, if the Default sound set is selected.