Looks like that's caused by a typo in your combat routine. Open ExampleRoutine.cs (notepad will do) and hit Ctrl-F to search, then find 'HasHearldOfAshBuff' and replace it with 'HasHeraldOfAshBuff'. Do the same for 'HasHearldOfIceBuff', replacing it with 'HasHeraldOfIceBuff'. It should work then.