Two questions: custom battlers and force action

I've playing around with RPG maker MV, getting used to it while I try to think up my story.

I downloaded a bunch of custom battlers and put them in the img\enemies folder in the project directory, but they're not available in the database section when creating an enemy.

When I use force action in a battle, the enemy who is being forced to act becomes immortal for some reason.

I haven't checked this, but I think if you have the side-view battles checked in the system tab, you may need to put your enemy sprites in the sv_enemies folder, not the enemies folder, which is front view.

That's probably it.  Thank you.

Any idea why force action would cause a monster to become immortal?

It should not - unless the skill used changes the features with a state.

Can you give us screenshots of the event with the force action, the skill used and so on?

Exactly what was happening is as follows:

I have an encounter with a succubus, which also has a Minotaur that is not initially in the battle.  When the succubus drops to half health, she says two lines of dialogue, the Minotaur is made visible, and the succubus casts rage (a skill which adds the rage state) on it. 

As a side note, I'm using side battle style and have the Yanfly battle plugin active. 

A description of your plans doesn't help - please provide the requested screenshots, including a screenshot of the rage state.

We need to see what the settings and commands are, not what you intended them to do.

Here are the requested screenshots.











I played around a bit and now know exactly where the problem is: the plugin. If I turn it off, it works fine.