Not yet updated to 15 but had an issue with 14. I recently reformatted and spent a few months tweaking my setup and every application I use on a regular basis. I am an advanced user, everything running very smoothly.
My issue related to MC: when using Firefox, occasionally when downloading an Executable file/binary (.exe), when prompting me to save or run, it says "Type: J River Media Center 14 Registration file") or something to that effect.
I've checked file handling settings in Firefox and also Windows file associations and have no idea what's causing this quirk. I want to suggest that it's something with the file name structure, as it seems to happen when a file has a few dots in the name, e.g. setup.1242.exe
Curiously enough, Internet Explorer seems unaffected. Again, I believe this is because I did the activation for my MC install through Firefox.
Any ideas?
Thanks.