If you don't have extras installed this doesn't work.

python /Users/jonahan/Downloads/adium_xtra_updater_8_13508_5837/adium updater.py
Traceback (most recent call last):
File "/Users/jonahan/Downloads/adium_xtra_updater_8_13508_5837/adium updater.py", line 20, in
for f in os.listdir(os.path.expanduser(line[:-1])):
OSError: [Errno 2] No such file or directory: '/Users/jonahan/Library/Application Support/Adium 2.0/Menu Bar Icons'
Jonahans-Computer:~ jonahan$ python /Users/jonahan/Downloads/adium_xtra_updater_8_13508_5837/adium updater.py
Traceback (most recent call last):
File "/Users/jonahan/Downloads/adium_xtra_updater_8_13508_5837/adium updater.py", line 20, in
for f in os.listdir(os.path.expanduser(line[:-1])):
OSError: [Errno 2] No such file or directory: '/Users/jonahan/Library/Application Support/Adium 2.0/Service Icons'

You have to just create the folders but it's a bit annoying.