If you have one episode of a program scheduled as a recording, when you try to add a series scheduled (e.g. every time on this channel) by selecting a different episode from the EPG, the schedule never gets added.

If you try to add the same schedule from 'search', it is added fine.

Internal forum thread:

http://forum.team-mediaportal.com/mediaportal-releases-315/problem-adding-schedule-81367/