AttributeError: 'unicode' object has no attribute 'file'

[lyon.jeffrey@…]

Error occurred when submitting a new ticket with no attachments.

Trac error: "Note that the AwesomeAttachmentsPlugin plugin seems to be involved. Please report this issue to the plugin maintainer."

Trac detected an internal error:
AttributeError: 'unicode' object has no attribute 'file'

Python Traceback:

Most recent call last: 

File "/usr/local/python/lib/python2.7/site-packages/Trac-1.0.1-py2.7.egg/trac/web/main.py", line 497, in _dispatch_request
  dispatcher.dispatch(req)
File "/usr/local/python/lib/python2.7/site-packages/Trac-1.0.1-py2.7.egg/trac/web/main.py", line 214, in dispatch
  resp = chosen_handler.process_request(req)
File "/usr/local/python/lib/python2.7/site-packages/Trac-1.0.1-py2.7.egg/trac/ticket/web_ui.py", line 180, in process_request
  return self._process_newticket_request(req)
File "/usr/local/python/lib/python2.7/site-packages/Trac-1.0.1-py2.7.egg/trac/ticket/web_ui.py", line 465, in _process_newticket_request
  self._do_create(req, ticket) # (redirected if successful)
File "build/bdist.linux-x86_64/egg/awesome/awesomeattachments.py", line 100, in _do_create
  self._create_attachment(req, ticket, req.args['attachment[]'], req.args['description[]'])
File "build/bdist.linux-x86_64/egg/awesome/awesomeattachments.py", line 58, in _create_attachment
  if hasattr(upload.file, 'fileno'):

System Information:

User Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET CLR 1.1.4322; InfoPath.2; .NET4.0C; .NET4.0E)

Trac 1.0.1
Babel 0.9.6
Docutils 0.8.1
FullBlog 0.1.1
Genshi 0.6 (without speedups)
Pygments 1.4
pysqlite 2.6.0
Python 2.7.3 
pytz 2011n
RPC 1.1.2
setuptools 0.6
SQLite 3.7.3
Subversion 1.7.9 (r1462340)
jQuery 1.7.2

[anonymous]

I'm experiencing this behavior as well.

[Ryan J Ollos]

In 13605:

0.3dev: Avoid exception when a ticket is created with no attachments. Fixes #11273.