Issue using IBM iAccess, ODBC, and PDO

I am unsure if this is an iAccess issue, an ODBC issue, or a PDO issue so I'll likely contact both this and the ODBC mailing list to see what comes of it. Using the iAccess connector and ODBC, with PDO, I am able to insert, update, and delete records without issue. That said, calling stored procedures does not work at all. So far, I can only think it is either a configuration issue, or a problem with the way the parameters (IN and OUT both) are bound. PDO states that I am calling bind on a non-object, meaning that the statement I am using or the connection I am using is breaking it. Have any of you successfully managed to call stored procs using iAccess? I had to workaround, for now, using java and the JDBC driver, which work perfectly. Thanks! Matt Parnell