I think after hours of frustration, it seems this maybe the .NICNT file! My library did not have one in its folder! Just in case anyone else...
I have tried (installed, and uninstalled) : Kontakt 5_541 Mac Kontakt Player 530_mac Kontakt_v5.6.6 (this seemed a new GUI and was quite slow?)...
I have a k'd Kontakt 5 (various 5.3, 5.6.6 etc) and these used to work fine with a drive full of libraries, on an external FW800 HD. However...
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