ERROR(1210) with only archery overhaul checked

[Arlyana]

ERROR(1210): Vital behavior file cannot be found. This will cause T-pose in game. To fix this, either reinstall the mod or manually restore this behavior file File: c:\steam\steamapps\common\skyrim special edition\data\meshes\actors\character\behaviors\swimbehavior.hkx

[cosjrc]

Same issue, but I just checked Character Behaviors Enhanced and it's looking for weapunequip.hkx

Where do these files that we are supposed to restore come from in the first place? There are no similar files in that location. There are a lot of files like Nemesis_WeapUnequip.xml in that location. (this is a brand new install; I see that in the previous bottle I was running Skyrim (without Nemesis), there are some similar files, though not that one (there is a weapequip.hkx).)

Another issue: What are these 15 mods that Nemesis has check boxes for? None look familiar, and none of the mods I do have, that supposedly need Nemesis, show up in this list.