mysqli bind_param giving error: (1210) Incorrect arguments to mysql_stmt_execute

I have this exact same code working great on another server: ``` $mysqli_Cxn = new mysqli($SQL_HOST,$SQL_USER,$SQL_PASS,$SQL_DB); if($mysqli_Cxn->connect_errno){ echo 'Unable to connect!!'; exit(); } $userID=12345; $userFirstName = 'Charley'; $userLocale = 'en_US'; $sql = "UPDATE userProfile SET userFirstName=?, userLocale=? WHERE id=?"; if($stmt = $mysqli_Cxn->prepare($sql)){ if(!$stmt->bind_param('ssi',$userFirstName,$userLocale,$userID)){ echo "<br/><br/>Binding parameters failed: (" . $stmt->errno . ") " . $stmt->error; } if($stmt->execute()){ totalAffected=$stmt->affected_rows; if($totalAffected>=1){ echo '<br/><br/>UPDATE OK: Affected rows = '. $totalAffected; } }else{ echo "Execute failed: (" . $stmt->errno . ") " . $stmt->error; } } $stmt->close(); ``` That code gives me the following output: Execute failed: (1210) Incorrect arguments to mysql_stmt_execute If I change these two lines: ``` $sql = "UPDATE userProfile SET userFirstName=?, userLocale=? WHERE id=?"; $stmt->bind_param('ssi',$userFirstName,$userLocale,$userID); ``` to this: ``` $sql = "UPDATE userProfile SET userFirstName=?, userLocale='en_US' WHERE id=12345"; $stmt->bind_param('s',$userFirstName); ``` ...then the Update is successful and I don't get any error. Does anyone know why I can't bind more than one param in this code? I had this code running perfectly on a Centos 4.9, PHP 5.3.3, MySQL 5.0.91/5.0.91-community-log I need to run it on my current server which is Centos 6.2, PHP 5.3.10, MySQL 5.0.95-community-log