After a very successful trial period with the Beta testers the game has been release to the masses for 'field testing' and...
BOOM! I get hit with a serious quantity of support requests. Not good.
Finally got to the bottom of the main program issue. A couple of file references were missing. One of those 'If this box isn't ticked the world stops' scenarios!
Game is now stable. Famous last words perhaps but there they are!
To all the players that endevoured to try, try again and helped me to solve the issues...I thank you.