Odd load failure

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I'm getting back around to playing OFF again after a hiatus, and am having an odd loading issue. I get all the way to the black screen w Richtoffen and Ball right before the mission loads, but it never loads, and when I exit out I have this error window on the screen:

 

End tag 'Unlimited pilots' does not match the start tag 'CFS3Pilot'.

Error on line 673,position 3 in file:c; documents and settings etc etc all the way to cfsww1 over flanders fields/UnlimitedPilots.xml.

 

Anybody got any idea what the heck this means? Oddly enough the game has worked fine the past two days I've used it. This is new, and I'd hate to have to delete all my old pilots to fix, but anyway. If anyone has some ideas I'd much appreciate it.

 

Many thanks,

 

ZZ.