createUser

All, I've used the createUser.pkg included with InstaDMG before with great success. However now I need to create a user with no password. I looked through the script as well as the hash function and see there are several checks to avoid a blank password. I even tried commenting those out to see if it would work but no such luck. Could someone give me a pointer to creating a user without a password? Either by modifying the package or by another means. Thanks!