Unable to Open Project: “Is a directory"

OK — thanks for your response. I tried to submit a support request, but I am unable to — even though Dorico is listed in “My Products” in my Steinberg account, I can’t select it when I’m trying to submit a support request, and the field is required. This screenshot shows the issue.

Does anyone else have any suggestions? If I’m unable to open the file, I’ll have to re-do a whole day of work, which would be a real bummer…
Screen Shot 2017-04-13 at 11.50.12 PM.png