Im not sure why it won't open. Try right clicking on the folder and use the compress option.
Would need pic of KP to try to make sense of whats happening. You are getting past still waiting for root device when it proceeds in the USB3 port so its definitely something else. What seems to be happening is the USB2 port shuts down/becomes unrecognized, but the FL kext keeps the USB3 port going. USBInjectAll.kext will reenable USB2, webcam, and WIFI card when you install to S/L/E after install.