Sharepoint 2007 Unknown Error

To continue with the last topic, in order to disable the famous "Unknown error" so you can know what's happening.

- Open the web.config file of the Web Application you're receiving the error, it's located in the toor path of the Web App.

- Set the callstack value to ="true".
- Set the customErrors value ="Off"
- Repeat the operation that was giving the error, you should see now a descriptive error and its stack pile.