Arcana and PK mods failing to load if unobsoleted, save incompatibility suspected

[chaosvolt]

Game version: 0.C-24000-g54e8b53962.

Operating system: Windows 7, 32-bit.

Tiles or curses: Tiles.

Mods active:

• First test world: Dark Days Ahead, Filthy Clothing, Disable NPC Needs, Filthy Clothing, Simplified Nutrition, Arcana and Magic Items
• Second test world: Dark Days Ahead, Filthy Clothing, Disable NPC Needs, Filthy Clothing, Simplified Nutrition, Crazy Cataclysm, PKs Reimagining.

Expected behavior

Obsoleted mods, if used with an old save or altered to be unobsolete, will load without issue, retaining the stated objective of save-compatibility.

Actual behavior

Incomplete application of some mapgen reworks (not sure which) and other changes seem to cause it to throw these errors on attempting to load the old mods:

First and second test worlds, respectively. If I still HAD an old save from back in the day I'd test that too, but save-incompatibility there is expected.

Steps to reproduce the behavior

• Edit the modinfo for either mod to no longer mark these mods as obsolete, or procure a save dating back to the days when these were official mods.
• Attempt to start or load a save with said mod(s) in use.

Additionally, apologies to Coolthulu for intruding here. Not really even an issue worth bothering with, but if the old mods are salvageable at this point then dropping them might be best in the long run, especially since the CDDA Launcher is infamous for not handling attempts to use third-party versions of formerly-official mods correctly.

[chaosvolt]

Closing thanks to @cainiaowu, will technically be unfucked on this version when patch is updated (if it hasn't aleady been).