KeyError 'F' when attempting to combine -f and -n options

[forensic65x]

I am trying to create a password list that appends numbers to each word in the full password list.

When looping the results of the full password list, passgen.py is generating this error on multiple words.

Traceback (most recent call last): File "passgen.py", line 56, in passwords = appendNumbers(password) File "/opt/PassGen/substitute.py", line 31, in appendNumbers return basicSub(password, True) File "/opt/PassGen/substitute.py", line 24, in basicSub replacements = product(subDict[password[0]], characterList) KeyError: 'F'

When I run those options separately on each word, no error is generated.

Any suggestions?