Well after some consternation, the problem with the ODBCKit and Leopard has been identified and fixed. As a bonus, this should also resolve several issues with MySQL ODBC issues that have plagued the 0.2.5 release.
Today, 0.2.6 was released and it adds a couple of minor fixes, but also paves the way for some major enhancements in terms of gracefully dealing with driver and ODBC version support issues that linger from the quick 'bring up' of the code without a whole lot of thought into dealing with the various permutations of driver behavior.
0.2.8 is targeted for January, and should accompany the release of the upcoming DBAAP package as the new ODBC Automator Actions depend upon functionality found in that code. For more information, check out the product page for ODBCKit.