PreProcessing is failling with "got invalid document size"

After recording with the following option: sudo mongoreplay record -p /data/playback.bson -i em1 --full-replies. We encounter the following error while replaying

mongoreplay play -p /mongoreplay/p.bson --report replay.log

2016/11/22 17:25:19 Doing playback at 1.00x speed

2016/11/22 17:25:19 Preprocessing file

PreprocessMap: got invalid document size

By using --no-preprocess, we are able to replay the record. The record is too big to be uploaded in Jira but you can contact me directly to have access if required.