Error converting humann2 files to wham format

[kose-bioinfo]

Hi all,

Looking forward to using wham on my sample set. I am unfortunately stuck in the first hurdle:

python humann_2_wham.py humann_genefamilies_combined.tsv > wham_output_genefamilies_mime2.tsv

Error
Traceback (most recent call last):
File "humann_2_wham.py", line 54, in
acc=R.group(2)
AttributeError: 'NoneType' object has no attribute 'group'

The above error crops up. Is this a re.U unicode issue?

Thanks