IceTV has recently changed its channel names for Melbourne, to accommodate regional Victoria with the same guide. So "ABC Melbourne" has become just "ABC".
[Edit: Ok, I take that back. Something has broken, though, so I will take it up with EyeTV.]
This silent change broke the EyeTV/IceTV-remote link because EyeTV considers the station name, not the LCN, to be the key field that identifies a channel. EyeTV doesn't know that the guide data for "ABC" is to be used for the channel "ABC Melbourne", unless I tell it by going into the channel-editing screen. (Which I have done, but if I was on holidays I couldn't have done so, and that's kind of the point of IceTV Remote.)
IceTV people: If you make changes to the guide format, can you please announce what you did, so that we can judge whether it is going to break our respective setups?