> Thank you for the responses.
> The application and stored procedures utilize a UDF.dll. Does this need
> to change? Does it need to be compiled as a 64-bit .dll for the server,
> but remain 32-bit on the clients?

The client application doesn't use the UDF library directly. The UDF
library must match the bitness of the server.

The Firebird client library fbclient.dll/gds32.dll bitness must match
the bitness of the client application, thus in your case 32-bit.

To summarize for a 64-bit Firebird server and a 32-bit client application:

* UDF Library => 64-bit
* Firebird client library => 32-bit



--
With regards,
Thomas Steinmaurer
http://www.upscene.com/

Professional Tools and Services for Firebird
FB TraceManager, IB LogManager, Database Health Check, Tuning etc.