A:TB Sample Map works, but not A:TB Sample Addon as of the Halloween Update.

[pseudo wyvern]

Tell me if this isn't the right place for this kind of discussion.

When I load up the Sample Map custom story it works pretty fine, but when I try to play with the Sample Addon on Amnesia: TB, it crashes. This happens with almost every other addon I've used for Amnesia:TB since the Halloween Update, I believe it is because they were made pre-HU.

I think this is the case with the Sample Addon, unless if it somehow isn't. If it is, then it should be updated.

[languid flicker]

This is a known bug. I've heard it worked for someone to load up a custom story with addons.

Though a bit inconvenient, this is the fix I found worked for me for it:
#mods-discussion message

Essentially turning the addons into a custom story