I am sorry for the troubles. I assume you used the "Amiga Forever CD/DVD" button that produces this kind of error message. The bug is known and will be fixed in next release.
Please install the Amiga Forever first and then run AmiKit and try "AF Installed" button instead.
Alternatively you can download and install AmiKit within the Amiga Forever player. Run Amiga Forever, switch to Application tab, select AmiKit entry and press the download button. Once the package is downloaded, it gets installed automatically. Now simply doubleclick the AmiKit entry and enjoy!
Another alternative is to download and install older AmiKit version (1.5.0
). Then when you boot to the AmiKit desktop, Live Update program appears and updates your AmiKit to the latest version automatically.