On Sat, Feb 03, 2018 at 12:55:34AM +0300, Karelin Timofey wrote:
> Package: blender
> Version: 2.79+dfsg0-3+b2
> Severity: grave
> Justification: renders package unusable
> Dear Maintainer, Blender=2.79+dfsg0-3+b2 did not start with this error:
> "blender: symbol lookup error: /usr/lib/libOpenColorIO.so.1: undefined 
> symbol: _ZN4YAML6detail9node_data12empty_scalarB5cxx11E".

Works for me.

> Versions of packages blender depends on:
> ii  libavcodec57                      10:3.3.3-dmo3
> ii  libavdevice57                     10:3.3.1-dmo2
> ii  libavformat57                     10:3.3.3-dmo3
> ii  libavutil55                       10:3.3.3-dmo3
> ii  libswscale4                       10:3.3.3-dmo3

The packages from deb-multimedia.org are known to sometimes interact 
badly with packages from Debian, in this case you have due to the
epoch an older version of the ffmpeg libraries installed than what
is in Debian.

What does
  dpkg -l | grep dmo
output, and does installing the Debian versions of these libraries 
instead fix the problem?

It is also possible that your problem might be unrelated to that,
which version of the libyaml-cpp0.5v5 package do you have installed?



       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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