If I place a short black title as the first item in The Joiner it usually causes the resultant file to have no audio except a very brief burst of noise at the start. If I take that title out of the joiner and re-render the file it has normal audio. If I put another black title back in at the head the audio is kaput again. This behaviour is consistent with any affected file, which is most of them. These are DVB-T 720x576 16:9 mpeg2 TS files in VRD version 220.127.116.111. TS in > TS out. In my tests, this problem does not occur in VRD v18.104.22.1681. I have samples and logs.