Good morning,
your answer is very misunderstanding. I realize that you don't know what the problem is
and of course you are not able to give the correct answer or solution too.
I'm very sorry for this situation, because I am customer for over 15 (fifteen) years.
The application has problems with the activation.
I have already installed the JRiver Media Center 27 for Windows (Win10 Professional). My previous version was Media Center 270038-x64 and
after the installation of Media Center 270043-x64 the system asks for activation. I did the activation with the install key *.mjr and the result was
that the application does not work correctly since then with the files belonging to the shell intergration programs, for example *.mjl.
I hope for a correct answer....