I have KN2400's and recently bought a KN2600. I had the Song Manager/ Audio recorder already installed on my home pc for the KN2400, so I uninstalled in and installed it again this time selecting the KN2600 option. THe Audio would work but the Song manager would only download not upload. I reconnected a KN2400 and it worked perfectly. So I then connected the KN2600 to another pc, installed the software and it worked fine( this pc had not had any Technics software previously installed).
I also have a PR604 and the software is installed on my home pc with the KN2400 software and all works fine. ( I only plug one it at a time).
So I am totally confused why the Software for the kn2600 will not work.
Can anyone help?