[Creation Kit] [NSFW] Need help converting my Mod to SSE

[Prime66]

So im trying to convert a mod that I released yesterday to SSE. 
I already loaded it up in the creation kit and also used this Tool to Optimize the meshes. But when I try to preview the Converted meshes in the Creation Kit, it always crashes for a few specific ones. Mostly the ones made by the Original mod author. I also tried SSE Nif Optimizer without any luck. 
Here is the link if you want to take a look yourself: 

 

 

 

The Meshes that crashed the CK are 
Dollsuit backup.Nif
Dollsuit.Nif 
Dollsuit_Blindfold.Nif
Pedestal_in_use.nif 
probably more, but id go insane by the time I tested what crashed the CK. 

[Alter Native]

SE crashes for textures that are no power of 2 while LE can handle them.

So make sure all textures used have the correct size.

[Prime66]

4 hours ago, Alter Native said:

SE crashes for textures that are no power of 2 while LE can handle them.

So make sure all textures used have the correct size.

Thanks so much. 
I would never have figured that out on my own.