LuaException : [string "ardour {..."]:41: assertion failed!

Hello,

I don’t manage to run the lua script (vamp audio to midi ) in the last version of ardour. I 've got this output as noticed in the title. Can you help me

Thanks

Nico

Please specify the version of Ardour you are using.

You need to select both an audio and a midi region before running the script – see about 20sec into https://vimeo.com/186035015