Insert Inflection tuple error

glyphs v.799

I get the following message when I run insert inflections from Filter Menu. The inflection points are still added, and I am unaware why the func prompts an error.

This is a custom filter. Can you post an issue on its GitHub page?
And did you check it you have the latest version of the plugin?

No, I haven’t. I will check for a latest version. Thx

@Rainer - Thanks for the update. Working nicely now.