Hi Gunther,
I am having an issue where by only half of the Visual Preview of my time-lapse sequence will load in the visual previews window.
See screenshot here:
http://postimg.org/image/u0qcondr1/
I have converted my images from CR2 to DNG using the Adobe DNG convertor, and I selected to include embedded previews in the Preferences when converting.
I get this error message: Preview could no be loaded. Solution: please try to embed one with Lightroom: -> Metadata -> Update DNG Preview and Metadata.
So I have done this, gone into Lightroom, updated the metadata and saved it, back into LR Timelapse and no change to the visual previews.
I have also uninstalled and reinstalled DNG Convertor, I can see that it is green DNG button is visible in the top right hand corner of LR timelapse. Also I have tried doing 'Clear all time-lapse edits' incase it is an issue with the metadata.
Hopefully you can help, it seem very strange that it will load half the sequence but can't load previews for the other half.
Apart from this, big fan of LR time-lapse, amazingly helpful for my correcting exposure change and flicker in my many time-lapse sequences!
Thanks very much.