[FX.php List] How to stop error with bad username/password

[Glenn Singleton]

Hi 

I am getting an error from PHP when trying to connect to a fp7 file with an
invalid username/password combination.

Invalid layout and database not available errors are handled by fx.php, but
username/password seems to trigger an error before fx.php.

How do I trap this error gracefully.

Sample code would really help rather than just a reference to a function.

Thanks
Glenn Singleton