struct.error: unpack requires a buffer of 2 bytes

[justanothertryhard]

Attempting to use this script to convert Cowboy's Collection for Avaraline. I believe this is an easy fix, but I haven't done any scripting in about 10 years and I've never touched python.

$ python3.6 convert_levels.py cowboy.rsrc 

Traceback (most recent call last):
  File "convert_levels.py", line 155, in <module>
    resources = get_resources(args.file)
  File "convert_levels.py", line 42, in get_resources
    resources = reader.parse(data)
  File "/stuff/avara-level-converter-master/Converter/resource.py", line 29, in parse
    nameOffset = bytes_to_short(resmap[26:28])
  File "/stuff/avara-level-converter-master/Converter/helpers.py", line 9, in bytes_to_short
    return struct.unpack('>h', some_bytes)[0]
struct.error: unpack requires a buffer of 2 bytes

Cowboy's Collection: http://www.cytheraguides.com/archives/ambrosia_addons/avara/Levels/255_Cowboys%20Collection%201.2.sit.hqx

Unarchived, zipped (and renamed) Cowboy's Collection attached. cowboy.zip