"password" plugin not working

[Marios]

I have configured the password plugin per the README file, editing config.inc.php and config/main.inc.php and it doesn't seem to work.
I have used the SQL option, and the default "SELECT update_passwd(%c, %u)", but when attempting to change a password I get a failed message.

Can anybody point out what to check/try further?

Thank you.

[alec]

Start thinking. Do you have update_passwd function in your database?

[stkcode]

Use the sql command line or install something like phpmyadmin and test the sql queries.  

When it's working, replace the appropriate characters (ie, replace user@domain.com with %u) and use them in the passwd plugin config.  

Use your favorite search engine for sql queries.  More then likely your going to be using the UPDATE sql command and not the update_passwd function.