I fixed the "quick-win?" part of this issue by clarifying the error message with info on what could be the problem. Please also note that you can set a custom text editor under Preferences > Code > Custom Editor. All of this clearly needs more work which is why I'm leaving this issue open.
Expected behaviour
I think Defold should ask me for editor to open script with
Actual behaviour
Just a error report shown
Steps to reproduce
Right click on script, choose "Open as -> External editor"
I fixed the "quick-win?" part of this issue by clarifying the error message with info on what could be the problem. Please also note that you can set a custom text editor under Preferences > Code > Custom Editor. All of this clearly needs more work which is why I'm leaving this issue open.