"Killed" message

[ahemberger]

Hi there; in trying to run the actual artistic_video.lua script, the process appears to die rather quickly, with a not-terribly-descriptive error message:
...
conv5_4: 512 512 3 3
fc6: 1 1 25088 4096
fc7: 1 1 4096 4096
fc8: 1 1 4096 1000
Style image size: 418 x 310
Setting up temporal consistency.
Setting up style layer 2 : relu1_1
Setting up style layer 7 : relu2_1
Killed

The ffmpeg and deepFlow bit of things seems to work fine (I have a sequence of frames, and a sequence of .flo files, along with some "reliable.pgm" files). How might I troubleshoot this?