Hi!
First of all, I'm very sorry. Most of the bugs I've encountered too are at the main menu creation steps. A lot of unhandled scenarios. I've left this tool abandoned for some time since I've been tied up with work and other projects, but I should go give it a general bug fix soon enough (I hope), with some much needed QoL updates. I have a long list I want to tackle.
If you'd like and could, please leave me like a quick reproduction steps of the issues you've encountered. With some luck I can tackle those first.
Sorry again and thanks for using my tool regardless!