Hi Bret,
We have no issues with 12.5.4 in our Windows 2003 and Windows XP setups. Currently, we are just transferring our application from Windows 2003 Server to Windows Server 2008 Server R2 64bit. Our previous ODBC Driver installer (Sybase System 11) is not working anymore with 64bit OS, so we opted in using ASE ODBC Client Driver with the same version with our Server ASE.
Can we use the latest Client ASE ODBC Driver with our 12.5.4 Server ASE? Thanks.