Is there a PingPlotter.rip file in your PingPlotter directory? If so, this will have a lot more information about the problem - email that to support@pingplotter.com.

If you have a license, you might also try the latest 3.15 standard beta (http://www.pingplotter.com/beta). Along with quite a few tweaks, it has an enhanced error system that might better catch the crash.

Thanks,
Pete