[Tutor] Cannot open SQLite database

[Timo]

Hello all, my program uses SQLite as database and everything worked fine 
until now.
I have over 3000 downloads of my program, but I got 2 mails this week 
from people who get this error:

OperationalError: unable to open database file

I searched the net, and all problems seem to be of a not writeable 
directory or passing a tilde to connect to the database.
As far as I know, this isn't the case with my program.
Here is some code:


# Get the application data folder
# This will return: C:\Documents and Settings\user\Application Data\myapp
PREFDIR = os.path.join(os.environ['APPDATA'], 'myapp')

# Connect to the database
def db_connect():
     conn = sqlite3.connect(os.path.join(PREFDIR, 'myapp.db')) # This 
line gives the error
     conn.text_factory = str
     cursor = conn.cursor()
     return (conn, cursor)


I noticed that the 2 users that got the error are Russian, so I thought 
that the Russian characters would cause problems. I tried on my Linux 
and Windows machines with some Russian names, but thet doesn't seem the 
problem.

Some help is appreciated :-).

Cheers,
Timo