Record playback does not work if SamyGO started

[docG4]

On my EU55D7000 if I start SamyGO widget any attempt to playback
the existing recording I have made without SamyGO
on my external HD fail and a message: "Failed to Play. No content found"
appears. If I do any new recording that works fine also in playback.

If I switch off and on the TV and do not start SamyGO widget
then both old and new recording work fine.

Any idea ?