[mythtv-users] The file for this recording can not be found

[Edmund]

When I go to the select a recording to watch page and scroll down the 
program titles and then go across to select an episode the top one is 
now grey. If I select it I see the file for this recording can not be 
found. Other lower episodes are still white.

If I select one of them it plays. If I escape out the episode I have 
just seen is now grey and I get The file for this recording can not be 
found.

If I escape out of this screen and go back in I can play it again (once).

In all cases the files are there.

I have recently switched my backend to ubuntu from debian whilst 
preserving my recordings and copying the database. The recordings are 
all owned by the mythtv user and mythtv group. My front end is on a 
different box to the back end.

When I turn off the preview window this goes away.

I am happy to live without the preview but I am worried that I have a 
setting wrong somewhere as this didn't happen before.