What version are you running?
rbt 07.7

What steps will reproduce the problem?

Open a command prompt
type rbt install tfs
Receive error


What is the expected output? What do you see instead?
It should download the tfs package for rbt.
What operating system are you using?
Windows 10
Attach the debug out from the command.

PS C:\dev\WarpDrive\branches\Development> rbt install --debug tfs
>>> RBTools 0.7.7
>>> Python 2.7.6 (default, Nov 10 2013, 19:24:18) [MSC v.1500 32 bit (Intel)]
>>> Running on Windows-8-6.2.9200
>>> Home = C:\Users\mevans\AppData\Roaming
>>> Current directory = C:\dev\WarpDrive\branches\Development
>>> Command line: rbt install --debug tfs
>>> Downloading http://downloads.beanbaginc.com/rb-tfs/rb-tfs.zip
Traceback (most recent call last):
  File "C:\Program Files (x86)\RBTools\bin\..\Python27\Scripts\rbt-script.py", line 8, in <module>
    load_entry_point('RBTools==0.7.7', 'console_scripts', 'rbt')()
  File "C:\Program Files (x86)\RBTools\Python27\lib\site-packages\rbtools-0.7.7-py2.7.egg\rbtools\commands\main.py", lin
e 133, in main
    command.run_from_argv([RB_MAIN, command_name] + args)
  File "C:\Program Files (x86)\RBTools\Python27\lib\site-packages\rbtools-0.7.7-py2.7.egg\rbtools\commands\__init__.py",
 line 661, in run_from_argv
    exit_code = self.main(*args) or 0
  File "C:\Program Files (x86)\RBTools\Python27\lib\site-packages\rbtools-0.7.7-py2.7.egg\rbtools\commands\install.py",
line 61, in main
    zip_filename = self.download_file(url, label=label)
  File "C:\Program Files (x86)\RBTools\Python27\lib\site-packages\rbtools-0.7.7-py2.7.egg\rbtools\commands\install.py",
line 223, in download_file
    raise CommandError('Error when downloading file: %s' % e)
rbtools.commands.CommandError: Error when downloading file: HTTP Error 503: Service Unavailable



Please provide any additional information below.
It's highly possible that this is being caused because I am attempting to run the command behind a firewall. However, when I try and access the URL directly, I receive a forbidden error. Do I need to be logged in somewhere to be able to access this file?