We have been using Mezzmo happily since 2012. With the current Mezzmo update 4k JPG files (3840 x 2160 px) can't be screened any more on our Samsung UE65HU7590 (Series 7 UHD TV).

Mezzmo connects to the Samsung TV
Thumbnails of the JPG files are displayed (so the TV must read something)
BUT filesize is displayed as 0 and the Samsung TV reports an unreadable file format.


This happens with 3840 x 2160 (4K) files only.

1920 x 1080 (HD) files are working properly.

I have tried a couple of different settings with no success so far.