I am running under Windows 10. In the last couple of days, each time I enter a new person, after entering the forename the program hangs and "(Not Responding)" shows after the program name in the top left hand corner of the screen. I thought this may have been due to a recent Windows update, so have restored the system to an earlier date but with no success. Sometimes the program returns on its own, but usually I have to "end program" and restart. I have also restarted the computer several times. The last person added had Person ID 16500 but this phenomenon has been seen since approximately 16450. I am running it as an Administrator. Suggestions welcomed.