Do we need to recompile MySQL++ lib for Xeon 64bit / Dual Core

Hi, I have trouble trying to deal with a client in india who only has a xeon
processor or a dual core and my application uses MySQL++ library to make the
connection to mysql. The MySQL installation is a regular rpm file nothing
specific for the 64 bit and i can run it just fine, but when my application
runs on the xeon / dual core it core dumps at the time when i am trying to
connect to mysql, connect() throws an exception, unfortunately the
executable i sent to client didnt have a catch in it, so i dont know what
seems to be the exact reason, but someone ever face this issue?

I can run the exact same code here in my lab with a regular P4.

What gives?

Thanks
Ankur