XML gauge problems

Guys, not sure if this is the right forum, but here goes.Firstly, please assume I know how to install a panel - I've been using FS in all its guises for years, and have many different addons installed with no problems previously, so I HOPE it's not me! LOLJust yesterday, for no reason I can fathom, none of my add-on panels that include XML gauges will display those particular gauges. GAU's - no problem, but XML - just that ugly black blob.I have re-installed FS9, and re-installed one or two of the panels to test them out, with no luck. I either get the blob, or FS9 crashes to desktop.Can somebody suggest a possible cause, and thus a possible resolution??FS9, XPpro, GeForce4 MX440, 512MB RAM etc etcSteve MarksEngland