Howard Miller

I hope you mean both "moodledata" and the contents of the database.

That's either an upgrade and/or a migraiting but it certainly isn't a new installation. A new installation implies empty / no courses.

Sorry to be so pedantic but it's important that we are clear about what you're doing.

Is this an install or an upgrade? The text implies an upgrade. If so, from what?

'Core' is the inner classes of Moodle, so that being broken is odd. Why did you decide to show that particular directory? I saw nothing in the previous information to point me to Assignment.

It might be helpful to spell it out (I can't see what you're getting at).

You're on the verge of the dreaded, RTFM. Which, admittedly, sometimes *is* the answer

There's a mathematical tools forum if you are into this stuff (https://moodle.org/mod/forum/view.php?id=752)

It was an answer to James. Please infer nothing else