David Sterling

@mattaustin83 - Yep same issue (null ref). Will respond back to the calendaring folks that we have multiple instances of this so we make sure there is enough urgency. Thanks...

The null ref issue fix was checked in last week. Fixed in build 15.20.1326.000 which is currently rolling out world wide.

:) I had the calendaring devs fix the issue and then I backported the fix it all the builds currently in production. So it was just a matter of waiting...

Can you post your timezone request header? Sounds like the timezone definitions has an incomplete set of transition periods.