Opening and Updating a Project in 3.5

On starting Dorico 3.5 I selected a project to open and got the message

This project was created in version 3.5 of Dorico. It will be automatically updated to the current version.

Obviously this message is odd in its own right, and I’m 99% certain I created the project in 3.5 too.

I get this all the time. 3.5.X, and X can be different things.

Ah, got you, so I am running 3.5.10 but may have created the project at 3.5.0