I have a DSM 510 and am using TwonkyVision 4.4.4.
When I playback a half hour video file (MPG, approx 600 MB) everything looks great. If I select fast forward, the video will fast forward correctly but it shows the video to be about 7 minutes in length. If I press the play key within that 7 minutes, the video will resume correctly. If I press the FF key after the 7 minute window has passed, I get an "Unsupported Function" response.
Other than that, everyting works great. Has anyone had a similar experience? Can anyone help?