I have made myself some kdenlive profiles to render to ProRes HQ but since somewhen between November 2014 and now some update seems to have done massive changes. My old render profiles didn't work anymore. I figured them out so far that it does render, by I only get something like 1-4 frames of audio in the beginning of the rendered file. The rest is silent.
The problem only occurs when rendering to anything with pcm_sxxxx, means also DNxHD.

I see no error message on the console. ffmpeg -codecs shows the pcm_sxxxx codec present and available.
I already purge-uninstalled and reinstalled kdenlive.

Using kubuntu 14.04 LTS with the sunab PPAs.

viewtopic.php?f=272&t=124415

Yes, I did see that and it's a different thing. I only have problems when using PCM as output audio codec and as I wrote, I did already purge-uninstall and reinstall everything and I am using the sunab PPA.