Server failed at startup

I have the following problem:

24 10:48:58 E Python: Traceback (most recent call last):
E Python:
24 10:48:58 E Python: File "scripts\executables.py", line 15, in <module>
E Python:
24 10:48:58 E Python:
24 10:48:58 E Python: import MySQLdb
E Python:
24 10:48:58 E Python: File "scripts\MySQLdb\__init__.py", line 34, in <module>
E Python:

24 10:48:58 E Python:
24 10:48:58 E Python: from sets import ImmutableSet
E Python:
24 10:48:58 E Python: ImportError
24 10:48:58 E Python: :
24 10:48:58 E Python: No module named sets

I want to install the server for my friend but after this the server is shutting down. At my own pc i dont have this problem, its strange because he has the same files.

Anyone know?

try to reinstall python, full package
www.python.org

oh,...didnt know that the person had no python installed -.-

thx