Follow the steps in the FAQ. The same steps apply.
Code:
Q: How do I enable debug logging?
A: Set "Log_Level" to "3" in the ioFTPD.ini file and restart ioFTPD.
Q: What does "Group locking failed." or "User locking failed." mean?
A: This error can be caused by a number of failures, try the following.
- Enable debug logging and paste recent entries from the debug.
- Check that the module is able to establish a connection with the MySQL server.
- Check that all tables and stored procedures exist.
- Check that the MySQL user account has execute privileges (required for stored procedures).
- Check that the MySQL server is the latest v5.0 version.