Extracted .zip and Kali persistent USB died

[USAemulators]

Using Kali 2018.1-64 persistence on 16gb cruzer USB stick, I simply downloaded wifijammer-ng zip and extracted the files to a folder in Documents and then the machine turned off. Now the USB stick doesnt load the yumi 2.0.5.4 loader with that single Kali iso on it. The regular wifijammer had worked fine on it for a while now...