No sounds:
1. Did you install dsd_fsx_xml_sound.gau to the C:\..\Microsoft Flight Simulator X\Gauges folder?
2. Did you place all the sound files in the C:\..\Microsoft Flight Simulator X\Sound\V-One folder?

Both, yes

1-http://img259.imageshack.us/img259/7306/vone.jpg

2-http://img812.imageshack.us/img812/1341/vone2.jpg


Both gauges appear when you select each one from the menu?
Did you confirm functionality of the original V-One Gauge prior to installing this upgrade?
I will check.