so finally I also did the upgrade and unfortunately ran into a problem.
Some of my videos (avi/mp4) are playing fine but all my MKV (recorded from DVB and transcoded to x264 and mp3 are not playing at all in standard setting maybe a single frame shown but thats it the logs for that are here http://paste.osmc.io/nucojewipu.
A small sample of the file can be found here: https://dl.dropboxusercontent.com/u/88660355/out.mkv
All of that files are playing 100% fine on the same machine when I use a SD card that I have not upgraded.
Unfortunately I don’t have a solution, but rather the same problem. The mkv files I created from DVD won’t play audio when the audio has been encoded in mp3. Aac audio does work. There was no problem before the July update. I was waiting for the promised weekend update to see if it fixes this bug before posting myself
You might have found this by yourself by now, but the information might be helpful to others who encounter the same issue. Repacking my mkv files with mkvmerge helped “repair” the files and mp3 sound is back on my Vero.