Several things to comment.

1. I just get the first trading strategy assuming it was going to work as expected but I don’t really need that one.
2. Because of 1. I started with a very basic strategy and here we are!! 🙂
3. Just in case, I did the changes you did and the behavior was a bit different. As you can see on the attachment, I got the optimization statemente with no data and got the same error.
4. You’re rigth, I’m feeling like I’m lossing this powerful tool and I really need it.
5. I export a very simple strategy (attached), maybe you can try to import it and run it and  let see what happen.
6. Thanks for your time and effort.