When there is not enough RAM available, calling the evaluation script will fail. In my case, a notebook with 8GB RAM and 2 GB Swap is not enough.
It will then produce a message like this (with another timestamp):
FileNotFoundError: [Errno 2] No such file or directory: './data/run/03co_01311428_score'
The workaround is to increase the size of the swap. For me, 8GB additional swap was sufficient.
Here is a way to increase swapsize: Click