pnglib version problem - needs older version

[Jared emery]

The comparision demo is failing with the following message:

libpng warning: Application built with libpng-1.4.12 but running with 1.6.37

/Users/jaredemery/torch/install/bin/luajit: ...rs/jaredemery/torch/install/share/lua/5.1/image/init.lua:156: [read_png] png_create_read_struct failed

stack traceback:

      [C]: in function 'load'

...rs/jaredemery/torch/install/share/lua/5.1/image/init.lua:156: in function 'loader'

  ...rs/jaredemery/torch/install/share/lua/5.1/image/init.lua:388: in function 'load'

    ...lib/python2.7/site-packages/openface/openface_server.lua:64: in main chunk

  [C]: in function 'dofile'

      ...mery/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:150: in main chunk

 [C]: at 0x0101904b00

Error getting result from Torch subprocess.

Line read:

Exception:

could not convert string to float:

============

stdout:

Anyone know how to fix this? I can't seem to use conda to install an older version of pnglib, and I don't know how to "build the application" with the newest version

thanks