I tried to copy and paste in the information, also tried to enter it in by hand, but I receive a similar error.
This is one of the output messages that I'm receiving.
I: -input-charset not specified, using utf-8 (detected in locale settings)
genisoimage: Missing pathspec.
Usage: genisoimage [options] -o file directory ...
Use genisoimage -help
to get a list of valid options.
Report problems to email@example.com.