After the last update there is a random chance of the game becoming unplayable, crashing on generating loot after a boss fight (encountered this after the farmstead shambler and after Lv 1 banshee). And then the game crashes every time you try to continue that campaign. I proved this by meticulously disabling one mod at a time until I disabled Sunward Isles and that campaign loaded. Unfortunately, my main campaign cannot be continued if I disable Sunward Isles - I guess there are too many trinkets and quests, it crashes even before finishing loading. And it crashes after loading if I NOT disable Sunward Isles.
What a bummer.
The debug log spews something about non-existient rarity id=-4<a long number I didn't remember>