Incorrect XML

Hello,

I have a problem with dhtmlxconnector to generate a good xml file.
I received a message “Incorrect XML”

With firebug i copy a result of my request and copy in xml file. My grid is ok.
In php the xml file have some blank space caractere before to start.

How to delete this blank space ?

Thanks

In php the xml file have some blank space caractere before to start.
It may be the reason in case of FireFox

If you are using some includes with custom code in the connector ( db-connection info in most cases ) - check that files, they may have trailing whitespaces after php code