Roby, I started with the mediaportal tv server routine for exporting and importing channels. But over the time (versions) I have added a lot of exception handling and rewritten some routines including for groups. If there is still an exception occuring I do need the log file being posted here with the debug setting on. I do not see why an identical channel name would result in an exception. I had an export exception before but this should be fixed by the latest version. So if someone could post an example i would be interested to look into more details.
revs, i have done it on Vista SP1 and XP SP3. So far i have not found any issues. Also there were no posts which indicate a problem being related to the upgrade from RC2 to RC3.