Unibeast 6.2.0 error?

Hi fellow hackintoshers, I've recently decided to update unibeast and create another bootable USB, but things didn't go as smooth. I have OS X 11.4, and unibeast 6.2.0, but when i try to install after selecting the bootloaders and all, and error message saying "Make sure neither OS X Install ESD or OS X Base System are mounted on your drive". I went on the forum and found a reply saying to check the disk utility and unmount the disk image but there was none... Please someone......

Also when...

Unibeast 6.2.0 error?