Originally Posted by hyman
Your attachment of the KAP file didn't work, though, so I can't look at it any further for now. Did you try the KAP file with any other viewer or navigation software
Thanks for coming back to me. I just downloaded and tried SeaClear (will be deleting it again shortly!). It loaded the chart, at first I thought it was all black but then realised that it was loaded in the wrong place. The calibration is off and showing up around 10 degrees south.
OCPN shows the chart outlines in the correct place.
The same .map file and image file correctly make a .kap with mapc2mapc which I found a copy of in the murky depths of my hard drive so I don't think there is anything wrong with the input files.
It's either a bug or finger trouble ... probably the latter!