iCal provided is not valid

To be completed by the original poster:

CMS Version

4.2.0

Player Type

Windows PC

Player Version

R404

Issue

When I walked in the building today, I noticed the calendar had switched to May but showed no data. Within CMS, my calendar now shows “The iCal provided is not valid, please choose a valid feed”. The feed is outlook.html that has always worked previously. I’ve tried different feed URL’s and nothing works.

On a separate note, but could be related, when I request screen shot from the players, it is taking more than 10 minutes to return. They usually return within a couple of seconds.

Does anyone know where to start looking for the problem?