python error 2

python filetransfer.py 0 4294967296 /Volumes/Backup\ Drive/chris/Desktop/Recording\ Sessions/S1/Session\ 1/untitled ~/Desktop/temp
Traceback (most recent call last):
  File "filetransfer.py", line 8, in <module>
    begin = int(sys.argv[3])
ValueError: invalid literal for int() with base 10: '/Volumes/Backup Drive/chris/Desktop/Recording Sessions/S1/Session 1/untitled'