Disklavier

Hi
I'm using dkc-850 with iMac running the new 10.11 OS X  but already in 10.10.5 Yosemite version I could not anymore connect to the dkc-850 through the network in finder of the iMac ( and use for example the dkc browser application) ... Someone posted here that the only way was to use a small application "trolcommander". I did that and it gives me acces from the iMac to the FromToPc folder of the dkc-850 and the abilitty to add or remove midi files and folders. It's a type of file transfer application which I'm not so knowledgeable about but  it works fine . My connection is through Ethernet cable and router . Maybe there is a better way out there ...  ;- )