Devede fails to create VCD and mkv/h264 with subtitles

[glaubersm]

Devede NG 4.8.9 on Arch linux.

After remove the subtitles file from my project, the VCD is successfully created.

My log is attached.
vcd log.txt

[glaubersm]

I just noticed that create mkv/h264 with subtitles fails too, see my log.
No problem to create a mkv file without subtitles.
I tested VCD and mkv/h264 creation uisng ffmpeg and avconv and both failed.

mkv failed.txt

[rastersoft]

Mmmm... that's odd. I'll check it ASAP.