IIS Import issue

Traceback (most recent call last): 
File "W:\wwwroot\Private\Piwik\misc\log-analytics\import_logs.py", line 1560, 
in <module> 
main() 
File "W:\wwwroot\Private\Piwik\misc\log-analytics\import_logs.py", line 1524, 
in main 
parser.parse(filename) 
File "W:\wwwroot\Private\Piwik\misc\log-analytics\import_logs.py", line 1378, 
in parse 
format = self.detect_format(file) 
File "W:\wwwroot\Private\Piwik\misc\log-analytics\import_logs.py", line 1325, 
in detect_format 
match = candidate_format.check_format(file) 
File "W:\wwwroot\Private\Piwik\misc\log-analytics\import_logs.py", line 160, i 
n check_format 
self.regex = re.compile(' '.join(full_regex)) 
File "C:\Apps\Python\lib\re.py", line 190, in compile 
return _compile(pattern, flags) 
File "C:\Apps\Python\lib\re.py", line 242, in _compile 
raise error, v # invalid expression 
sre_constants.error: unbalanced parenthesis