When attempting to create a slide show in Lightroom, each time I get an error message - "The program has stopped working and must be shut down". Restarting the program did not help.
Could you please share the crash logs for Lightroom so that we can get to know the cause of the crash.
Also, would suggest you to install QuickTime version 7 on your machine.
Instructions to get to the event viewer crash logs for Lightroom :