Database connection error.

I installed Advanced Poll 2.03. Seems to work fine, except if I try to embed it into my WordPress sidebar. Then I get this message.

Warning: mysql_connect(): Access denied for user: 'xxxxxxx@localhost' (Using password: NO) in /home/xxxxx/public_html/poll/include/class_mysql.php on line 32
Connection Error

xxxx does not show the username i created for the poll database, and which is duly inserted in the config file (otherwise the poll would work without embedding).

This seems to be a known issue, but I've found no solutions. anyone???

TIA

That usually means you made a mistake in your username/password

What kind of error could I make?

The poll works just fine on its own, and the process of embeding it does not require any action involving username/password.