fails on my pictures

[dicarne]

$ python pack.py 1.png 2.png out.png
Traceback (most recent call last):
  File "pack.py", line 186, in <module>
    main(*sys.argv[1:4])
  File "pack.py", line 120, in main
    b += acomp
TypeError: can't concat bool to bytes

The example runs fine on windows, but it fails to run with other pictures. Are there any special requirements for pictures?

[dicarne]

before error, the "False" return from here

[DavidBuchanan314]

See #5

[mnixry]

Change the False to b"" works for me, but it may cause corrupt image sometime