[lch]

Addition to the shortlist, "MOD (monster/nation) Descriptions": The game doesn't crash, it just "forgets" other descriptions that come later in the mod. Mod nation descriptions seem to get added the last, so they're the first to get erased. Then the unit descriptions are cancelled out. The later a unit is created in the mod, the sooner the description is missing in case there are too many of them.

Spell descriptions seem to use another array for their descriptions, they don't interfere with unit/nation descriptions in any way. Don't know what the limit is there.