Thx Jan for the great info here, I did not know about this.
When AK reads the CD it tells me it is 2005 / 2006 and not AF5 / AF6, or at least that is how the message on the installation script handles the issue. The error message given states "this is not a genuine copy of Amiga Forever" or something like that.
(Unless I uninstall / reinstall the whole thing again to see the exact error message, I cannot recreate the situation again since after installing the required Amiga files off the OS3.9 CD, now AK runs no matter what!)
Who cares now anyway: everything is working fine again and I'm back on track enjoying your great creation as before. I wish only someone could come up with some software / hardware add-on thing to pc systems so people like me could also enjoy the Amiga's HAM graphics mode.
I know HAM was even hated by most Amigans back then (myself included at first) but later I came to realize some great potentials in HAM that come in really handy for certain grfx projects.
Anyway, keep up the good work! Pray for me so I'll have a better financial situation to support you and all those great people like you who still do care about the Amiga and its user base with great achievements like this.
SP / AP