they're not even released yet
they are and i downloaded one map which encludes the props but the are sth like error
what did you download? nobody released the assets yet, they said they'd announce when they are released.
Those models are from EArkham's model pack, not from the Mayann Project. You need to take the folder with the models and place it under tf/models and then place the materials for the models under tf/materials/models.
Separate names with a comma.