[Question]NPCs and Mobs are invisible when i login

Well, when i login every NPC and Mob is invisible in my screen.

Here's a pic:

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Does anyone know why? o.o ( It's kinda annoying ^^ )

make sure u havent blocked anything to load npcs and mobs.
I had this once,when i was adding ptb in dominationco :)

Thank you zombie!

Adding in PacketHandler.cs didn't work for me.. But i added it to Teleport.cs and it works well :)