Hjalti Magnússon

Could it be that no matches fall within the default criteria of similarities accounting for at least 90% of either file? You can change that with the -p flag.

Sounds like you do not have dot installed or do not have permission to run the executable. - Make sure graphviz is installed (https://graphviz.org/download/) - Make sure the dot executable...

@FlynnMc No, not that I am aware of.