Cannot Save new file based on custom project template

When I create a new project based on the attached template, I’m unable to save that project. The software stops responding and I never regain control. This happens on M1 MacBook as well as Windows 11 pc. I do not have this issue with other templates I have created.

Multi Flow.dorico (534.3 KB)

I can’t open the file; Dorico throws an error. So obviously not a wellformed file.

Welcome to the forum, @dbian. Like Nickie I’m unable to open the project you’ve attached. I assume you’re able to open the project on your own computer?