So far, the only problem that's semi-consistently reported is that the BUM files don't seem to be transferring correctly. There is a workaround for them so they can still be used, but the import is supposed to work for the BUMs too, and E-on is pretty busy right now working out what the problem might be. All the rest seems to be working as it should. I only got my own v.4 installed late last night so I haven't been able to try it out myself just yet.