error using drisse.py

[OrsonMM]

command used is :

drisee.py -g ../../Programas/DRISEE/adapterDB.fna ../../Programas/DRISEE/example_fasta my_fasta.err

error is :

Traceback (most recent call last):
File "/home/oamestanzam/Programas/DRISEE/drisee.py", line 601, in
sys.exit(main(sys.argv))
File "/home/oamestanzam/Programas/DRISEE/drisee.py", line 580, in main
write_file(summary, LOG_FILE, 1)
File "/home/oamestanzam/Programas/DRISEE/drisee.py", line 75, in write_file
outhdl = open(fname, mode)
TypeError: coercing to Unicode: need string or buffer, NoneType found