Thanks for the quick reply!
Nope, not bundled. Addon is Master Recipe List and library is LibPhinixFunctions. Neither has been changed since they were last uploaded, and were working fine at the time. The only thing that changed is something in a patch between then and now. I have been away from the game for months and only came back to update as people were pointing out the sudden errors related to nil returns from a library that the addon is set to depend on.
EDIT: Problem was unrelated to addon dependency loading. Recipes in the MRL database were removed from the game in a recent patch requiring the database to be edited so reference to these no longer existing ID's didn't cause errors. The other thing with the library was a syntax typo that just happened to happen at the same time, causing me to jump the gun on the suspected cause.
