Hello there friend! I was playing Flans mod and recently after I installed several new mods, all the 3d models went invisible. I tried reinstalling the content packs, and the core mod, to no avail. Perhaps you know any of these mods are not compatible?

Portal Gun
Morph
More Player Models
Optifine
MineCamera
FastCraft
Decocraft
Custom Npcs
Crafting Pillars
Hats
IChunUtil
Flans
Chisel
Carpenter's Blocks
Camera Studio
Carpenter's Blocks
Bibliocraft
Security Craft

Here's a list of mods that I know worked before I added any extras

Custom Npcs
Decocraft
Chisel
Carpenters Blocks
Camera Studio
Optifine

Thanks! Apple Out!