Videos show "cannot open" error

[walshsa]

I have downloaded several videos that play fine on my iTouch to my iPad.

When I try to watch any I get the "cannot open" error. I can open one of films and see the chapter marker etc but any attempt to play and you get the error.

I have closed all applications via the "double home" bar.

I have restarted and reset and still no joy.

Any suggestions short of a "reset to factory default" and reload?

 

[walshsa]

I seemed to solve this by one of the following steps

1. Backup Ipad (suspect this didn't do anything)
2. Disable video sync
3. Remove all videos
4. Sync Ipad
5. Add a small sample mp4
6. Sync Ipad

This file that failed before then worked as did the next three movies I added