Error on Dyntools xlsout

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Hey Guys, Have been trying to work on my process for extracting files into excel from PSSE. However after some time unsure if my installation is corrupt or what however I am now getting this error.

Traceback (most recent call last):
  File "C:/Dropbox/Power System Services/Scripts/New folder/PYTHON/2.7/PSSE Python Scripts/PSSE/General/DynDataExtractorBenchmarkingTeebar.py", line 129, in <module>
    achnf.xlsout(channels=signals, show=False, xlsfile=(PathDir + "\\sheets\\" + "Case_" + str(i+1) + '_2.xlsx'), outfile='', sheet ='', overwritesheet=True);
  File ".\dyntools.py", line 1084, in xlsout
  File ".\dyntools.py", line 428, in _xls_export
  File ".\excelpy.py", line 168, in <module>
  File "C:\Python27\lib\site-packages\win32com\client\__init__.py", line 11, in <module>
    import gencache
  File "C:\Python27\lib\site-packages\win32com\client\gencache.py", line 662, in <module>
    __init__()
  File "C:\Python27\lib\site-packages\win32com\client\gencache.py", line 56, in __init__
    _LoadDicts()
  File "C:\Python27\lib\site-packages\win32com\client\gencache.py", line 111, in _LoadDicts
    clsidToTypelib = p.load()
ValueError: insecure string pickle

Process finished with exit code 1

While working on one script it has now broken all of my scripts where this function(below) is used.

 achnf = dyntools.CHNF(outfile);
 achnf.xlsout(channels=signals, show=False, xlsfile=excel_file, outfile='', sheet ='', overwritesheet=True);

Have tried re installing PSSE V34 Excel python

Any help would be appreciated