The blend file is wrong… cube is half height, and squash & stretch control doesn't work. I don't know how to fix the…

Hi fella, when you load the file look above the viewport. Theres a button that says reload Trusted. CLick that when you load it and it will allow the rig scripts to run and everything will work. It was mentioned earlier in the course, however due to time constraints was cutr from this lesson as it had already been mentioned. You can also enable auto run scripts in the preferences if this is a frequent issue. Again my apologies That your experiencing difficulties with the course, I hope this helps.