XML Gauge Problem

Greetings,
I'm hoping you can help me.
I'm going crazy here !!
I can never seem to get the XML Gauges to appear on downloaded aircraft panels.
The ones with .GAU gauges appear fine but not the .XML ones.
What am I doing wrong ?
Cheers for any help,
Chris
I'm hoping you can help me.
I'm going crazy here !!
I can never seem to get the XML Gauges to appear on downloaded aircraft panels.
The ones with .GAU gauges appear fine but not the .XML ones.
What am I doing wrong ?

Cheers for any help,
Chris