corrupt (?) model file while deleting vertices

[Cokemonkey11]

Hello,

I've used the vertex remove tool for the first time today to get rid of the "book" and the emitter faces from "Book of Summoning".

It seems to have worked successfully, but in-game the model sometimes turns red. There may or may not be some flickering associated with this.

My best guess is that the model file has some emitter data that is now corrupt.

Any help or advice would be appreciated.

Regards,

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EDIT: Book of Summoning has a "second" animation with no book. No need to help me fix this. Thanks.