whipper offset find -o OFFSET not working

[Falcon-1]

Traceback (most recent call last):
File "/usr/local/bin/whipper", line 11, in
load_entry_point('whipper==0.4.2', 'console_scripts', 'whipper')()
File "/usr/local/lib/python2.7/dist-packages/whipper-0.4.2-py2.7.egg/morituri/command/main.py", line 30, in main
cmd = Whipper(sys.argv[1:], os.path.basename(sys.argv[0]), None)
File "/usr/local/lib/python2.7/dist-packages/whipper-0.4.2-py2.7.egg/morituri/command/basecommand.py", line 101, in init
self.options
File "/usr/local/lib/python2.7/dist-packages/whipper-0.4.2-py2.7.egg/morituri/command/basecommand.py", line 101, in init
self.options
File "/usr/local/lib/python2.7/dist-packages/whipper-0.4.2-py2.7.egg/morituri/command/basecommand.py", line 88, in init
self.handle_arguments()
File "/usr/local/lib/python2.7/dist-packages/whipper-0.4.2-py2.7.egg/morituri/command/offset.py", line 78, in handle_arguments
self._offsets.append(int(b))
ValueError: invalid literal for int() with base 10: 'OFFSET'

[JoeLametta]

Offset is a placeholder for a signed integer value appropriate for the drive you're using with whipper (instructions here).
I'll update whipper's README, adding a practical example, to make it clearer.