Forget The Last Post about PvdImport. I completely uninstalled it, and removed all references to it in the registry, reinstalled it, added the key, string values and DWORD values. It's working fine now. If anyone else has this same problem, do the above. Should work perfectly.
If you don't know how to change your settings here's how. But don't mess with anything else in there.
Run "Regedit"
Open "HKEY_LOCAL_MACHINE"
On Windows 7-64bit, you need to Open "Wow6432"
Open JRiver
You may have old Media Center Programs listed. Mine are Media Centers 13 thru 19.
When I installed PvdImport, its default installation went to 15.
On the Attached .jpg you notice two "REG_DWORD" named "IVersion" and "PluginMode". If you have 0x00000000 (0) you'll need to change/edit the last Zero (0) to a (1). That's it. PvdImport will now be ready to run on 19. I would recommend a reboot.
If you haven't messed around in your systems Registry before, Don't do it. Have somebody who knows what they're doing do it for you. If you mess anything up in there, It's not going to be my fault. I warned you.