Thanks Bert
I will give that a go.
If it helps with the diagnosis, I saw the file was present:
Its contents are:
<?xml version="1.0" encoding="utf-8"?> <appsettings xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"></appsettings>
