File "Validation.py", line 123, in <module>
 import QSTK.qstkutil.tsutil as tsu
 File "/usr/local/lib/python2.7/dist-packages/QSTK-0.2.8-py2.7.egg/QSTK/qstkutil/tsutil.py", line 19, in <module>
 from QSTK.qstkutil import qsdateutil
 File "/usr/local/lib/python2.7/dist-packages/QSTK-0.2.8-py2.7.egg/QSTK/qstkutil/qsdateutil.py", line 38, in <module>
 GTS_DATES = _cache_dates()
 File "/usr/local/lib/python2.7/dist-packages/QSTK-0.2.8-py2.7.egg/QSTK/qstkutil/qsdateutil.py", line 36, in _cache_dates
 return pd.TimeSeries(index=dates, data=dates)
AttributeError: 'module' object has no attribute 'TimeSeries'
Any Ideas on how to solve this?