first of all, i think mp is a great piece of software!
But i have the problem, if i´m executing the automatic channelscan.
After a few minutes the channelscan aborts whithout any error (but he hasn´t finished).
Please fill out the support template (sticky in this topic) and post your mediaportal.log (Configuration also writes a log!). Are you using the wizard? If yes, finish the wizard without scanning for any channels and then use the configuration tool to scan (somehow that is more stable, do not ask why).