Here's a thought for you.

My Kn7 has crashed on me once and that was after loading a floppy used and saved from the KN6000. As many of you will know that keyboard caused both Technics Customer Services and myself a great deal of problems it was what is known in the UK as "a Friday product". At the time of the crash I was very worried. It then occured to me that maybe the floppy had saved all the faults that were on the KN6000 as well, so I initialised the KN7 back to Factory settings
and everything is back to normal now.

I was very relieved I can tell you and so far, I haven't experienced further problems apart from those I make myself (hope I'm not speaking too soon).

Needless to say, I have now destroyed the offending floppy.

Might this be your problem?

Aud (U.K.)