Flag cast / explodespell from activators without models with textures

[MortimerMcMire]

Attempting to cast/explodespell without a model (requires collisions?) causes a scale parameters crash bug

[Assumeru]

I don't think collision is a requirement since you can use rings.

Anyway the validator doesn't know anything about nifs at present so the best it could do is detect things that don't have models altogether which doesn't seem particularly useful. Unless there's some common models you'd want to blacklist?