EY wrote on Dec 13^th, 2023 at 11:40pm:

It looks like it is installed. Click "Check for updates" - you should be prompted to install the latest update (1.005 at this time). Please follow the instructions.

I did each time. I got a message that the captainsim installer was already running, so I clicked ok, and it brought me to the “finished” button. I would click it and assumed that the installation was successful. But having checked my community folder, there’s still no sign of the 717.

I do have a few other CS products, but they were all purchased/installed in the sim via the marketplace, and I haven’t had any issues there.