Can't Apply SMOOTH pen

[serber1990]

If you'd like to put out an incentive for fixing this bug, you can do so at https://issuehunt.io/r/bk138/gromit-mpx

Describe the bug
When I declare a SMOOTH pen in my cfg I get this error when executing the app

My cfg:

Error executing:

Do you know how can I fix this?

It happens the same when trying to apply RECT aswell

[bk138]

You need to build the app from source, from the main branch, as of now. SMOOTH and ORTHO are not in v1.6.0.