Sprite Manager 2 Demo

Ok so I recently got the sprite manager 2 but I get a error when i import the demo. It says

assets/sm2, demo/scripting demo/sm2_demo_js.js(2,30): BCE0018: the name 'packedsprite' does not denote a valid type ('not found').

assets/sm2, demo/scripting demo/sm2_demo_js.js(4,27): BCE0018: the name 'packedsprite' does not denote a valid type ('not found').

assets/sm2, demo/scripting demo/sm2_demo_js.js(1,27): BCE0018: the name 'packedsprite' does not denote a valid type ('not found').

assets/sm2, demo/scripting demo/sm2_demo_js.js(45,77): BCE0018: the name 'SpriteBase' does not denote a valid type ('not found').

When i import the package is it suppose to run and compile everything automatically or am i suppose to fix this error on my own? I imported by reading Brady's instruction on one of the forum I opened a new project and imported just only the sample demo package it didnt work so I imported the entire sprite manager 2 package and imported the sample project inside the project it still didnt work. yes I did click assets -> import package -> custom -> sprite sample demo and I also tried the other way also.