Posting my installlog for this as per your request on the comments. Also attached my spells2da and mod list incase they're of any use when it comes to figuring out what's happened.
I've also noticed that aside from Call Of Aid, other arm bands added by other mods (such as two added by Brotherhood Of Shadows) also fail to work correctly, if that info is of any use.
installlog.rtf spells.2da Kotor Mod List.txt