I use the Media Play movie function for months now. But all of a sudden, the preview thumbnails for watched videos are not created anymore. It helps a lot for orientation especially in case you use multiple folders on HDD.
Unfortunately, I wasn't able to find any tips on the web, only people who had the same phenomen but no clue

My TV is a LE40B620 (CI+) whose video functionality I enabled via Exlink. Since then it all worked just fine, I never changed anything else.
Any hints from you experts appreciated
