QGIS » QGIS Application

Link to Data: https://drive.google.com/file/d/0B8WLtz606XDdYzFuOXZNOGNIYkE/view?usp=sharing
File: ACC_Data.zip

Projection is EPSG:2240.

If I select a few lines it buffers. If I select all the lines it buffers. If I select nothing It throws the following python error. Other less dense polyline or point features buffer with no problem. I don't believe this is a problem with the data - I've used this data before for buffering in a class.

An error has occured while executing Python code:

Traceback (most recent call last):
              File "/usr/share/qgis/python/plugins/fTools/tools/doGeoprocessing.py", line 302, in run
                geos, feature, match, error = self.buffering( useField )
              File "/usr/share/qgis/python/plugins/fTools/tools/doGeoprocessing.py", line 449, in buffering
                inGeom = QgsGeometry( inFeat.geometry() )
            TypeError: arguments did not match any overloaded call:
              QgsGeometry(): too many arguments
              QgsGeometry(QgsGeometry): argument 1 has unexpected type 'NoneType'

Python version:
            2.7.6 (default, Mar 22 2014, 23:03:41) 
            [GCC 4.8.2]

QGIS version:
            2.8.1-Wien Wien, exported

Python path: ['/home/rjhale/.qgis2/python/plugins/processing', '/usr/share/qgis/python', u'/home/rjhale/.qgis2/python', u'/home/rjhale/.qgis2/python/plugins', '/usr/share/qgis/python/plugins', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PILcompat', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode', u'/home/rjhale/.qgis2//python', '/home/rjhale/.qgis2/python/plugins/DigitizingTools/tools', '/usr/share/qgis/python/plugins/fTools/tools', '/home/rjhale/.qgis2/python/plugins/mmqgis/forms']