Thanks for catching that!
On line 1055 I am reading in the array to be walked from the options table. However, in the case of new installs, there are not any options saved so it returns false instead of an array. This will only happen once after a new install because the default settings will then be saved and returned properly but I have fixed it in my code for the next release.
Thanks for pointing this out to me. Let me know if I can be of any further assistance.