Since the update 2 days ago, constantly getting this error upon logging into a character:

Couldn't open CT_Library\

On CurseForge, there was an empty space character in the toc file that I believe was causing this message on some Retail clients (but oddly enough, it never appeared on mine).

I removed the space and republished the Retail zip file to CurseForge.

https://www.curseforge.com/wow/addons/ctmod/files/3438196

If that doesn't fix it, please let me know because maybe there's something else I'm doing wrong.