For a while now I have been aware of a problem when running RUMNUT on some machines with Windows XP. One of the problems is that it freezes and crashes if you retrieve a ration on the second window. This may be a problem with how Windows XP has been set up to handle the program. Right Click on a RUMNUT icon to get a menu of options that starts with 'Open'. Select the bottom option - 'Properties'. Select the third tab - 'Compatibility'. Make sure that the 'Compatibility mode' and all the other tick boxes are clear then click OK and try the program again.