fidefrag crashed while running, file was in use

[tyl3r]

OS: Ubuntu Intrepid
fidefrag v. 2.11
fs: ext3

   0.07 MB 13 P 189.17 P/MB /home/username/.hellanzb/log.../username/.hellanzb/log
 --> File is open for write. Appending to blacklist.
Traceback (most recent call last):
  File "fidefrag.py", line 62, in <module>
    libfidefrag.defrag_op()
  File "/home/username/fidefrag/src/libfidefrag.py", line 238, in defrag_op
    clean_blacklist()
  File "/home/username/fidefrag/src/libfidefrag.py", line 223, in clean_blacklist
    file_list.remove(file)
ValueError: list.remove(x): x not in list

Hellanzb was in use that moment so the log files where in write access.

fidefrag was started this way:
sudo python fidefrag.py -d /home/username/

fidefrag also resides in my home directory.

Cheers