Python 2.7 error

Hello , i try to update python to 2.7 and now i have this error :
Code:
1106 21:47:22437 ::   File "networkModule.py", line 237, in SetGamePhase

1106 21:47:22437 ::   File "system.py", line 130, in __pack_import

1106 21:47:22438 ::   File "system.py", line 110, in _process_result

1106 21:47:22438 ::   File "game.py", line 29, in <module>

1106 21:47:22439 ::   File "system.py", line 137, in __pack_import

1106 21:47:22439 ::   File "D:\Cum sa faci un server de Metin2\Resurse 40k\ServerFile & Cliente\Phemios\IL 40k - VPS\lib\re.py", line 27, in <module>

1106 21:47:22439 ::     
1106 21:47:22439 :: from sre import *

1106 21:47:22439 ::   File "system.py", line 137, in __pack_import

1106 21:47:22440 ::   File "D:\Cum sa faci un server de Metin2\Resurse 40k\ServerFile & Cliente\Phemios\IL 40k - VPS\lib\sre.py", line 97, in <module>

1106 21:47:22440 ::     
1106 21:47:22440 :: import sre_compile

1106 21:47:22440 ::   File "system.py", line 137, in __pack_import

1106 21:47:22440 ::   File "D:\Cum sa faci un server de Metin2\Resurse 40k\ServerFile & Cliente\Phemios\IL 40k - VPS\lib\sre_compile.py", line 17, in <module>

1106 21:47:22440 ::     
1106 21:47:22441 :: assert _sre.MAGIC == MAGIC, "SRE module mismatch"

1106 21:47:22441 :: AssertionError
1106 21:47:22441 :: : 
1106 21:47:22441 :: SRE module mismatch
1106 21:47:22441 ::
I changed libs , but problem persist...