Classic British Flight Sim

Well threre I was at 30,000ft well on my way again to Lossiemouth when up popped the following:

R6025 Pure virtual function call

Which of course closed down my FS9 test flight!! GRRRRRRRRRRRR!!

Can a member skilled in curing such problems please tell me what to do to avoid that problem and put it right so that it does not occur again?

FS9 + FSNav only running. No weather.

Sorry, I can't be any help other than to suggest a Google of "R6025 Pure virtual function call" Many hits, but this one might narrow it down a bit http://horusj.blogspot.com/2008/08/need-help.html

Nigel²