Hi, Glyn. I'll be happy to assist you today.
Sorry to know you're experiencing this compatibility issue.
In order to run the game using compatibility mode, please right click on the icon and select the troubleshoot compatibility option. If you only have the icon in the Start menu, please right click on the program, select more then select Open file location option. Now you can right click on it and select the troubleshoot compatibility option.
Feel free to reach me if you require any additional assistance or have further questions.