I downloaded the 184.108.40.206 version of Marvin and when double-clicking on the academic license file, there was a message about an "startup error". Which solution there might be?
University of Barcelona
I assume this is an error to do with the browser viewing the forum post where the license is listed. I am not sure of the problem.
A common error is that you are not logged into the forum (using your academic package user account) when you try to visit the forum post, please note that the forum area where the key files are attached is a restricted area and only those accepted for the academic package can visit these posts.
If this doesn't help let me know