Do this for me. Pull up your "globals" file from where your exe is and control+f to look for "dimensionalcrystal". Do you come back with any entries? Or one from within mansionupgrades, specifically? Check for "allnpcs" as well (should be var allnpcs).
If you aren't finding those, I would deactivate Arics from the mod panel, exit the game, copy the files for the game folder from Important back to the base game, delete your backups folder, start the game and apply the mod, exit the game again, then start it to see if you have the same issue pop up. You might get away with just copy/pasting the Globals file as that seems to be the main cause of your error log messages (those dictionaries pull from globals) but doing them all should be safer.
Let me know if that clears it up!
