Peek inside it, I think it had something to do with a FontFamily being set to something that might not be available on your system. This issue came up in the webinar today.
I actually did watch the webminar I I missed that one.I just checked and it is indeed a missing font issue. It comes set to Adobe Arabic Family which is not on my system.
I will post it on github in case it can be change to a more standard font perhaps.