Hi Pierre,

Thanks very much, and sorry for the wait.
To prevent any messing about with NDA's I've been stripping everything out of a copy of the project and building using that to send to you.

This project build reproduces both of the errors I stated in my post, and hope it helps to narrow down what's going on with it.

Here's a link to the project build:

https://we.tl/t-oSQ5PB42et

Thanks very much,
I'll keep looking into it