The only mod I have, other than the official mods and the unofficial patches, is one I made myself that simply changes Sylgja's outfit and swaps her pickaxe for a dagger (and it never caused problems before).
My load order (FWIW) is as follows:
skyrim
dawnguard
hearthfire
dragonborn
high res text pack 1
high res text pack 2
high res text pack 3 (the fix for the missing log texture)
unofficial skyrim patch
unofficial dawnguard patch
unofficial hearthfire patch
unofficial dragonborn patch
sylgja mod (see above)
And for whatever reason, I can't see the readme file for the unofficial dragonborn patch - the "webpage cannot be displayed" message pops up - so I don't know if there's something in it that tells me about this issue (if its even a known thing).
Alright, that's the long and short of it. Any tips or info or confirmation is appreciated.
Thanks.