We tried several movies and it will begin to play then kicks you straight out to the list.
Things I have done.

MAG 254W1
- Connected via LAN speed (speed test 30Mbs down)
- IPTV Reset
- Change the Portal from S1 to S2
- Updated the firmware on the MAG254
- Changed the buffer size on Advanced setting to 10s

Channels seems to be ok, movies are not, any other suggestion?