When I go to the Guide I get a message No data available.: Your lineup data is to big and only contains a limit number of days.
The memory used by the EPG is limited and can hold normally 7 days of information. In the case however that your lineup is extremely large, eg. more then 500 channels, the available memory will be completely used by less then 7 days. If your guide time is pointing after the last available data, you will get a no data availble message.