Why can't the user browse the attachments using redhat-support-tool command line?

Issue

• Why can't the user upload attachments using the redhat-support-tool?
• Why can't the user browse the attachments using redhat-support-tool command line?

Command (? for help): listcases

Type the number of the case to view or 'e' to return to the previous menu.
 1 [Waiting on Red Hat]  Example case needs a sosreport attached
No more cases to display
Select a Case: 1

Type the number of the section to view or 'e' to return to the previous menu.
 1 Case Details
 2 Modify Case
 3 Description
 4 Case Discussion
 5 Recommendations
 6 Get Attachment
 7 Add Attachment
 8 Add Comment
End of options.
Option: 7
Please provide the full path to the file (or 'q' to exit): /tmp/sosreport-user.test-20140819084604-0a19.tar.xz
Please provide a description or enter to accept default (or 'q' to exit): requested sosreport
Unable to get attachment
Option: q

Select a Case: q

Command (? for help): q

• The following traceback appears in ~/.redhat-support-tool/logs/red_hat_support_tool.log

2014-08-26 12:56:50,603 - redhat-support-tool.rhhelp - Level 31 - Adding import ListKernelDebugs to plugin dictionary
2014-08-26 12:58:04,864 - redhat_support_tool.plugins.add_attachment - WARNING - Unable to get attachment
2014-08-26 12:58:04,864 - redhat_support_tool.helpers.launchhelper - ERROR - unknown URL type: /rs/cases/xxxxxxxxxx/attachments?public=True
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/redhat_support_tool/helpers/launchhelper.py", line 106, in run
    return cls.non_interactive_action()
  File "/usr/lib/python2.6/site-packages/redhat_support_tool/plugins/add_attachment.py", line 263, in non_interactive_action
    description=self._options['description'])
  File "/usr/lib/python2.6/site-packages/redhat_support_lib/infrastructure/brokers.py", line 638, in add
    description)[0]
  File "/usr/lib/python2.6/site-packages/redhat_support_lib/infrastructure/proxy.py", line 83, in upload
    response = conn.doUpload(url, fileName, description)
  File "/usr/lib/python2.6/site-packages/redhat_support_lib/web/connection.py", line 121, in doUpload
    self._doUpload(url, fileName, description)
  File "/usr/lib/python2.6/site-packages/redhat_support_lib/web/connection.py", line 178, in _doUpload
    skip_accept_encoding=1)
  File "/usr/lib64/python2.6/site-packages/M2Crypto/httpslib.py", line 150, in putrequest
    raise ValueError, "unknown URL type: %s" % url
ValueError: unknown URL type: /rs/cases/xxxxxxxxxx/attachments?public=True