Exeception while running Pytrace

[sumitsuthar94]

Hi,
I am getting following excetion while running command pytrace.
Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/2.7/bin/pytrace", line 11, in <module> load_entry_point('pytrace==0.2.4', 'console_scripts', 'pytrace')() File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytrace/__main__.py", line 13, in main reader_main() File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytrace/reader/__init__.py", line 75, in main listbox = LessLikeListBox(content) File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytrace/reader/__init__.py", line 25, in __init__ self._edit_boxes = [SearchBox(self), FilterBox(self.body.contents)] File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pytrace/reader/search.py", line 172, in __init__ self._parser = Parser(trace_walker._db.session) AttributeError: 'SimpleListWalker' object has no attribute '_db'

Please let me know what are other required dependencies which will be needed to work with Pytrace. Thanks in advance.